| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20170329050540.12392-1-clabbe.montjoie@gmail.com>
Date: Wed, 29 Mar 2017 07:05:40 +0200
From: Corentin Labbe <clabbe.montjoie@...il.com>
To: peppe.cavallaro@...com, alexandre.torgue@...com,
netdev@...r.kernel.org, davem@...emloft.net,
Joao.Pinto@...opsys.com
Cc: linux-kernel@...r.kernel.org,
Corentin Labbe <clabbe.montjoie@...il.com>
Subject: [PATCH] Revert "net: stmmac: enable multiple buffers"
The commit aff3d9eff843 ("net: stmmac: enable multiple buffers") breaks
numerous boards. while some patch exists for fixing some of it,
dwmac-sunxi is still broken with it.
Since this patch is very huge, it will be better to split it in smaller
part.
Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
---
drivers/net/ethernet/stmicro/stmmac/chain_mode.c | 45 +-
drivers/net/ethernet/stmicro/stmmac/ring_mode.c | 46 +-
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 49 +-
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1306 +++++++--------------
4 files changed, 473 insertions(+), 973 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/chain_mode.c b/drivers/net/ethernet/stmicro/stmmac/chain_mode.c
index 37881f8..01a8c02 100644
--- a/drivers/net/ethernet/stmicro/stmmac/chain_mode.c
+++ b/drivers/net/ethernet/stmicro/stmmac/chain_mode.c
@@ -26,15 +26,12 @@
static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
{
- struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)p;
+ struct stmmac_priv *priv = (struct stmmac_priv *)p;
+ unsigned int entry = priv->cur_tx;
+ struct dma_desc *desc = priv->dma_tx + entry;
unsigned int nopaged_len = skb_headlen(skb);
- struct stmmac_priv *priv = tx_q->priv_data;
- unsigned int entry = tx_q->cur_tx;
unsigned int bmax, des2;
unsigned int i = 1, len;
- struct dma_desc *desc;
-
- desc = tx_q->dma_tx + entry;
if (priv->plat->enh_desc)
bmax = BUF_SIZE_8KiB;
@@ -48,16 +45,16 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
desc->des2 = cpu_to_le32(des2);
if (dma_mapping_error(priv->device, des2))
return -1;
- tx_q->tx_skbuff_dma[entry].buf = des2;
- tx_q->tx_skbuff_dma[entry].len = bmax;
+ priv->tx_skbuff_dma[entry].buf = des2;
+ priv->tx_skbuff_dma[entry].len = bmax;
/* do not close the descriptor and do not set own bit */
priv->hw->desc->prepare_tx_desc(desc, 1, bmax, csum, STMMAC_CHAIN_MODE,
0, false);
while (len != 0) {
- tx_q->tx_skbuff[entry] = NULL;
+ priv->tx_skbuff[entry] = NULL;
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
- desc = tx_q->dma_tx + entry;
+ desc = priv->dma_tx + entry;
if (len > bmax) {
des2 = dma_map_single(priv->device,
@@ -66,8 +63,8 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
desc->des2 = cpu_to_le32(des2);
if (dma_mapping_error(priv->device, des2))
return -1;
- tx_q->tx_skbuff_dma[entry].buf = des2;
- tx_q->tx_skbuff_dma[entry].len = bmax;
+ priv->tx_skbuff_dma[entry].buf = des2;
+ priv->tx_skbuff_dma[entry].len = bmax;
priv->hw->desc->prepare_tx_desc(desc, 0, bmax, csum,
STMMAC_CHAIN_MODE, 1,
false);
@@ -80,8 +77,8 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
desc->des2 = cpu_to_le32(des2);
if (dma_mapping_error(priv->device, des2))
return -1;
- tx_q->tx_skbuff_dma[entry].buf = des2;
- tx_q->tx_skbuff_dma[entry].len = len;
+ priv->tx_skbuff_dma[entry].buf = des2;
+ priv->tx_skbuff_dma[entry].len = len;
/* last descriptor can be set now */
priv->hw->desc->prepare_tx_desc(desc, 0, len, csum,
STMMAC_CHAIN_MODE, 1,
@@ -90,7 +87,7 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
}
}
- tx_q->cur_tx = entry;
+ priv->cur_tx = entry;
return entry;
}
@@ -139,34 +136,32 @@ static void stmmac_init_dma_chain(void *des, dma_addr_t phy_addr,
static void stmmac_refill_desc3(void *priv_ptr, struct dma_desc *p)
{
- struct stmmac_rx_queue *rx_q = (struct stmmac_rx_queue *)priv_ptr;
- struct stmmac_priv *priv = rx_q->priv_data;
+ struct stmmac_priv *priv = (struct stmmac_priv *)priv_ptr;
if (priv->hwts_rx_en && !priv->extend_desc)
/* NOTE: Device will overwrite des3 with timestamp value if
* 1588-2002 time stamping is enabled, hence reinitialize it
* to keep explicit chaining in the descriptor.
*/
- p->des3 = cpu_to_le32((unsigned int)(rx_q->dma_rx_phy +
- (((rx_q->dirty_rx) + 1) %
+ p->des3 = cpu_to_le32((unsigned int)(priv->dma_rx_phy +
+ (((priv->dirty_rx) + 1) %
DMA_RX_SIZE) *
sizeof(struct dma_desc)));
}
static void stmmac_clean_desc3(void *priv_ptr, struct dma_desc *p)
{
- struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)priv_ptr;
- struct stmmac_priv *priv = tx_q->priv_data;
- unsigned int entry = tx_q->dirty_tx;
+ struct stmmac_priv *priv = (struct stmmac_priv *)priv_ptr;
+ unsigned int entry = priv->dirty_tx;
- if (tx_q->tx_skbuff_dma[entry].last_segment && !priv->extend_desc &&
+ if (priv->tx_skbuff_dma[entry].last_segment && !priv->extend_desc &&
priv->hwts_tx_en)
/* NOTE: Device will overwrite des3 with timestamp value if
* 1588-2002 time stamping is enabled, hence reinitialize it
* 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))
+ p->des3 = cpu_to_le32((unsigned int)((priv->dma_tx_phy +
+ ((priv->dirty_tx + 1) % DMA_TX_SIZE))
* sizeof(struct dma_desc)));
}
diff --git a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
index 31213e6..452f256 100644
--- a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
+++ b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
@@ -26,17 +26,16 @@
static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
{
- struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)p;
+ struct stmmac_priv *priv = (struct stmmac_priv *)p;
+ unsigned int entry = priv->cur_tx;
+ struct dma_desc *desc;
unsigned int nopaged_len = skb_headlen(skb);
- struct stmmac_priv *priv = tx_q->priv_data;
- unsigned int entry = tx_q->cur_tx;
unsigned int bmax, len, des2;
- struct dma_desc *desc;
if (priv->extend_desc)
- desc = (struct dma_desc *)(tx_q->dma_etx + entry);
+ desc = (struct dma_desc *)(priv->dma_etx + entry);
else
- desc = tx_q->dma_tx + entry;
+ desc = priv->dma_tx + entry;
if (priv->plat->enh_desc)
bmax = BUF_SIZE_8KiB;
@@ -53,29 +52,29 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
if (dma_mapping_error(priv->device, des2))
return -1;
- tx_q->tx_skbuff_dma[entry].buf = des2;
- tx_q->tx_skbuff_dma[entry].len = bmax;
- tx_q->tx_skbuff_dma[entry].is_jumbo = true;
+ priv->tx_skbuff_dma[entry].buf = des2;
+ priv->tx_skbuff_dma[entry].len = bmax;
+ priv->tx_skbuff_dma[entry].is_jumbo = true;
desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
priv->hw->desc->prepare_tx_desc(desc, 1, bmax, csum,
STMMAC_RING_MODE, 0, false);
- tx_q->tx_skbuff[entry] = NULL;
+ priv->tx_skbuff[entry] = NULL;
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
if (priv->extend_desc)
- desc = (struct dma_desc *)(tx_q->dma_etx + entry);
+ desc = (struct dma_desc *)(priv->dma_etx + entry);
else
- desc = tx_q->dma_tx + entry;
+ desc = priv->dma_tx + entry;
des2 = dma_map_single(priv->device, skb->data + bmax, len,
DMA_TO_DEVICE);
desc->des2 = cpu_to_le32(des2);
if (dma_mapping_error(priv->device, des2))
return -1;
- tx_q->tx_skbuff_dma[entry].buf = des2;
- tx_q->tx_skbuff_dma[entry].len = len;
- tx_q->tx_skbuff_dma[entry].is_jumbo = true;
+ priv->tx_skbuff_dma[entry].buf = des2;
+ priv->tx_skbuff_dma[entry].len = len;
+ priv->tx_skbuff_dma[entry].is_jumbo = true;
desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
priv->hw->desc->prepare_tx_desc(desc, 0, len, csum,
@@ -86,15 +85,15 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
desc->des2 = cpu_to_le32(des2);
if (dma_mapping_error(priv->device, des2))
return -1;
- tx_q->tx_skbuff_dma[entry].buf = des2;
- tx_q->tx_skbuff_dma[entry].len = nopaged_len;
- tx_q->tx_skbuff_dma[entry].is_jumbo = true;
+ priv->tx_skbuff_dma[entry].buf = des2;
+ priv->tx_skbuff_dma[entry].len = nopaged_len;
+ priv->tx_skbuff_dma[entry].is_jumbo = true;
desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
priv->hw->desc->prepare_tx_desc(desc, 1, nopaged_len, csum,
STMMAC_RING_MODE, 0, true);
}
- tx_q->cur_tx = entry;
+ priv->cur_tx = entry;
return entry;
}
@@ -126,13 +125,12 @@ static void stmmac_init_desc3(struct dma_desc *p)
static void stmmac_clean_desc3(void *priv_ptr, struct dma_desc *p)
{
- struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)priv_ptr;
- struct stmmac_priv *priv = tx_q->priv_data;
- unsigned int entry = tx_q->dirty_tx;
+ struct stmmac_priv *priv = (struct stmmac_priv *)priv_ptr;
+ unsigned int entry = priv->dirty_tx;
/* des3 is only used for jumbo frames tx or time stamping */
- if (unlikely(tx_q->tx_skbuff_dma[entry].is_jumbo ||
- (tx_q->tx_skbuff_dma[entry].last_segment &&
+ if (unlikely(priv->tx_skbuff_dma[entry].is_jumbo ||
+ (priv->tx_skbuff_dma[entry].last_segment &&
!priv->extend_desc && priv->hwts_tx_en)))
p->des3 = 0;
}
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 6ec671c..cd8fb61 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -46,35 +46,6 @@ struct stmmac_tx_info {
bool is_jumbo;
};
-/* Frequently used values are kept adjacent for cache effect */
-struct stmmac_tx_queue {
- u32 queue_index;
- struct stmmac_priv *priv_data;
- struct dma_extended_desc *dma_etx ____cacheline_aligned_in_smp;
- struct dma_desc *dma_tx;
- struct sk_buff **tx_skbuff;
- struct stmmac_tx_info *tx_skbuff_dma;
- unsigned int cur_tx;
- unsigned int dirty_tx;
- dma_addr_t dma_tx_phy;
- u32 tx_tail_addr;
-};
-
-struct stmmac_rx_queue {
- u32 queue_index;
- struct stmmac_priv *priv_data;
- struct dma_extended_desc *dma_erx;
- struct dma_desc *dma_rx ____cacheline_aligned_in_smp;
- struct sk_buff **rx_skbuff;
- dma_addr_t *rx_skbuff_dma;
- struct napi_struct napi ____cacheline_aligned_in_smp;
- unsigned int cur_rx;
- unsigned int dirty_rx;
- u32 rx_zeroc_thresh;
- dma_addr_t dma_rx_phy;
- u32 rx_tail_addr;
-};
-
struct stmmac_priv {
/* Frequently used values are kept adjacent for cache effect */
struct dma_extended_desc *dma_etx ____cacheline_aligned_in_smp;
@@ -85,22 +56,28 @@ struct stmmac_priv {
u32 tx_count_frames;
u32 tx_coal_frames;
u32 tx_coal_timer;
+ struct stmmac_tx_info *tx_skbuff_dma;
+ dma_addr_t dma_tx_phy;
int tx_coalesce;
int hwts_tx_en;
bool tx_path_in_lpi_mode;
struct timer_list txtimer;
bool tso;
- /* TX Queue */
- struct stmmac_tx_queue *tx_queue;
-
- /* RX Queue */
- struct stmmac_rx_queue *rx_queue;
-
+ struct dma_desc *dma_rx ____cacheline_aligned_in_smp;
+ struct dma_extended_desc *dma_erx;
+ struct sk_buff **rx_skbuff;
+ unsigned int cur_rx;
+ unsigned int dirty_rx;
unsigned int dma_buf_sz;
unsigned int rx_copybreak;
+ unsigned int rx_zeroc_thresh;
u32 rx_riwt;
int hwts_rx_en;
+ dma_addr_t *rx_skbuff_dma;
+ dma_addr_t dma_rx_phy;
+
+ struct napi_struct napi ____cacheline_aligned_in_smp;
void __iomem *ioaddr;
struct net_device *dev;
@@ -142,6 +119,8 @@ struct stmmac_priv {
spinlock_t ptp_lock;
void __iomem *mmcaddr;
void __iomem *ptpaddr;
+ u32 rx_tail_addr;
+ u32 tx_tail_addr;
u32 mss;
#ifdef CONFIG_DEBUG_FS
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 5f5a944..6a48edb 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -196,38 +196,26 @@ static void print_pkt(unsigned char *buf, int len)
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len);
}
-/**
- * stmmac_tx_avail - Get tx queue availability
- * @priv: driver private structure
- * @queue: TX queue index
- */
-static inline u32 stmmac_tx_avail(struct stmmac_priv *priv, u32 queue)
+static inline u32 stmmac_tx_avail(struct stmmac_priv *priv)
{
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
u32 avail;
- if (tx_q->dirty_tx > tx_q->cur_tx)
- avail = tx_q->dirty_tx - tx_q->cur_tx - 1;
+ if (priv->dirty_tx > priv->cur_tx)
+ avail = priv->dirty_tx - priv->cur_tx - 1;
else
- avail = DMA_TX_SIZE - tx_q->cur_tx + tx_q->dirty_tx - 1;
+ avail = DMA_TX_SIZE - priv->cur_tx + priv->dirty_tx - 1;
return avail;
}
-/**
- * stmmac_rx_dirty - Get RX queue dirty
- * @priv: driver private structure
- * @queue: RX queue index
- */
-static inline u32 stmmac_rx_dirty(struct stmmac_priv *priv, u32 queue)
+static inline u32 stmmac_rx_dirty(struct stmmac_priv *priv)
{
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
u32 dirty;
- if (rx_q->dirty_rx <= rx_q->cur_rx)
- dirty = rx_q->cur_rx - rx_q->dirty_rx;
+ if (priv->dirty_rx <= priv->cur_rx)
+ dirty = priv->cur_rx - priv->dirty_rx;
else
- dirty = DMA_RX_SIZE - rx_q->dirty_rx + rx_q->cur_rx;
+ dirty = DMA_RX_SIZE - priv->dirty_rx + priv->cur_rx;
return dirty;
}
@@ -255,19 +243,9 @@ static inline void stmmac_hw_fix_mac_speed(struct stmmac_priv *priv)
*/
static void stmmac_enable_eee_mode(struct stmmac_priv *priv)
{
- u32 tx_cnt = priv->plat->tx_queues_to_use;
- u32 queue;
-
- /* check if all TX queues have the work finished */
- for (queue = 0; queue < tx_cnt; queue++) {
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
-
- if (tx_q->dirty_tx != tx_q->cur_tx)
- return; /* still unfinished work */
- }
-
/* Check and enter in LPI mode */
- if (!priv->tx_path_in_lpi_mode)
+ if ((priv->dirty_tx == priv->cur_tx) &&
+ (priv->tx_path_in_lpi_mode == false))
priv->hw->mac->set_eee_mode(priv->hw,
priv->plat->en_tx_lpi_clockgating);
}
@@ -934,40 +912,20 @@ static int stmmac_init_phy(struct net_device *dev)
static void stmmac_display_rings(struct stmmac_priv *priv)
{
- u32 rx_cnt = priv->plat->rx_queues_to_use;
- u32 tx_cnt = priv->plat->tx_queues_to_use;
void *head_rx, *head_tx;
- u32 queue;
-
- /* Display RX rings */
- for (queue = 0; queue < rx_cnt; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- pr_info("\tRX Queue %d rings\n", queue);
-
- if (priv->extend_desc)
- head_rx = (void *)rx_q->dma_erx;
- else
- head_rx = (void *)rx_q->dma_rx;
- /* Display Rx ring */
- priv->hw->desc->display_ring(head_rx, DMA_RX_SIZE, true);
+ if (priv->extend_desc) {
+ head_rx = (void *)priv->dma_erx;
+ head_tx = (void *)priv->dma_etx;
+ } else {
+ head_rx = (void *)priv->dma_rx;
+ head_tx = (void *)priv->dma_tx;
}
- /* Display TX rings */
- for (queue = 0; queue < tx_cnt; queue++) {
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
-
- pr_info("\tTX Queue %d rings\n", queue);
-
- if (priv->extend_desc)
- head_tx = (void *)tx_q->dma_etx;
- else
- head_tx = (void *)tx_q->dma_tx;
-
- /* Display Tx ring */
- priv->hw->desc->display_ring(head_tx, DMA_TX_SIZE, false);
- }
+ /* 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)
@@ -987,86 +945,48 @@ static int stmmac_set_bfsize(int mtu, int bufsize)
}
/**
- * stmmac_clear_rx_descriptors - clear the descriptors of a RX queue
+ * stmmac_clear_descriptors - clear descriptors
* @priv: driver private structure
- * @queue: RX queue index
- * Description: this function is called to clear the RX descriptors
+ * Description: this function is called to clear the tx and rx descriptors
* in case of both basic and extended descriptors are used.
*/
-static void stmmac_clear_rx_descriptors(struct stmmac_priv *priv, u32 queue)
+static void stmmac_clear_descriptors(struct stmmac_priv *priv)
{
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
- u32 i = 0;
+ int i;
- /* Clear the RX descriptors */
+ /* Clear the Rx/Tx descriptors */
for (i = 0; i < DMA_RX_SIZE; i++)
if (priv->extend_desc)
- priv->hw->desc->init_rx_desc(&rx_q->dma_erx[i].basic,
+ priv->hw->desc->init_rx_desc(&priv->dma_erx[i].basic,
priv->use_riwt, priv->mode,
(i == DMA_RX_SIZE - 1));
else
- priv->hw->desc->init_rx_desc(&rx_q->dma_rx[i],
+ priv->hw->desc->init_rx_desc(&priv->dma_rx[i],
priv->use_riwt, priv->mode,
(i == DMA_RX_SIZE - 1));
-}
-
-/**
- * stmmac_clear_tx_descriptors - clear the descriptors of a TX queue
- * @priv: driver private structure
- * @queue: TX queue index
- * Description: this function is called to clear the TX descriptors
- * in case of both basic and extended descriptors are used.
- */
-static void stmmac_clear_tx_descriptors(struct stmmac_priv *priv, u32 queue)
-{
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
- u32 i = 0;
-
- /* Clear the TX descriptors */
for (i = 0; i < DMA_TX_SIZE; i++)
if (priv->extend_desc)
- priv->hw->desc->init_tx_desc(&tx_q->dma_etx[i].basic,
+ priv->hw->desc->init_tx_desc(&priv->dma_etx[i].basic,
priv->mode,
(i == DMA_TX_SIZE - 1));
else
- priv->hw->desc->init_tx_desc(&tx_q->dma_tx[i],
+ priv->hw->desc->init_tx_desc(&priv->dma_tx[i],
priv->mode,
(i == DMA_TX_SIZE - 1));
}
/**
- * stmmac_clear_descriptors - clear descriptors
- * @priv: driver private structure
- * Description: this function is called to clear the tx and rx descriptors
- * in case of both basic and extended descriptors are used.
- */
-static void stmmac_clear_descriptors(struct stmmac_priv *priv)
-{
- u32 rx_queue_cnt = priv->plat->rx_queues_to_use;
- u32 tx_queue_cnt = priv->plat->tx_queues_to_use;
- u32 queue;
-
- for (queue = 0; queue < rx_queue_cnt; queue++)
- stmmac_clear_rx_descriptors(priv, queue);
-
- for (queue = 0; queue < tx_queue_cnt; queue++)
- stmmac_clear_tx_descriptors(priv, queue);
-}
-
-/**
* stmmac_init_rx_buffers - init the RX descriptor buffer.
* @priv: driver private structure
* @p: descriptor pointer
* @i: descriptor index
* @flags: gfp flag.
- * @queue: RX queue index
* Description: this function is called to allocate a receive buffer, perform
* the DMA mapping and init the descriptor.
*/
static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
- int i, gfp_t flags, u32 queue)
+ int i, gfp_t flags)
{
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
struct sk_buff *skb;
skb = __netdev_alloc_skb_ip_align(priv->dev, priv->dma_buf_sz, flags);
@@ -1075,20 +995,20 @@ static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
"%s: Rx init fails; skb is NULL\n", __func__);
return -ENOMEM;
}
- rx_q->rx_skbuff[i] = skb;
- rx_q->rx_skbuff_dma[i] = dma_map_single(priv->device, skb->data,
+ priv->rx_skbuff[i] = skb;
+ priv->rx_skbuff_dma[i] = dma_map_single(priv->device, skb->data,
priv->dma_buf_sz,
DMA_FROM_DEVICE);
- if (dma_mapping_error(priv->device, rx_q->rx_skbuff_dma[i])) {
+ if (dma_mapping_error(priv->device, priv->rx_skbuff_dma[i])) {
netdev_err(priv->dev, "%s: DMA mapping error\n", __func__);
dev_kfree_skb_any(skb);
return -EINVAL;
}
if (priv->synopsys_id >= DWMAC_CORE_4_00)
- p->des0 = cpu_to_le32(rx_q->rx_skbuff_dma[i]);
+ p->des0 = cpu_to_le32(priv->rx_skbuff_dma[i]);
else
- p->des2 = cpu_to_le32(rx_q->rx_skbuff_dma[i]);
+ p->des2 = cpu_to_le32(priv->rx_skbuff_dma[i]);
if ((priv->hw->mode->init_desc3) &&
(priv->dma_buf_sz == BUF_SIZE_16KiB))
@@ -1097,136 +1017,30 @@ static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
return 0;
}
-/**
- * stmmac_free_rx_buffers - free RX buffers.
- * @priv: driver private structure
- * @queue: RX queue index
- * @i: buffer index
- */
-static void stmmac_free_rx_buffers(struct stmmac_priv *priv, u32 queue, int i)
+static void stmmac_free_rx_buffers(struct stmmac_priv *priv, int i)
{
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- if (rx_q->rx_skbuff[i]) {
- dma_unmap_single(priv->device, rx_q->rx_skbuff_dma[i],
+ if (priv->rx_skbuff[i]) {
+ dma_unmap_single(priv->device, priv->rx_skbuff_dma[i],
priv->dma_buf_sz, DMA_FROM_DEVICE);
- dev_kfree_skb_any(rx_q->rx_skbuff[i]);
- }
- rx_q->rx_skbuff[i] = NULL;
-}
-
-/**
- * stmmac_free_tx_buffers - free RX buffers.
- * @priv: driver private structure
- * @queue: RX queue index
- * @i: buffer index
- */
-static void stmmac_free_tx_buffers(struct stmmac_priv *priv, u32 queue, u32 i)
-{
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
-
- if (tx_q->tx_skbuff_dma[i].buf) {
- if (tx_q->tx_skbuff_dma[i].map_as_page)
- dma_unmap_page(priv->device,
- tx_q->tx_skbuff_dma[i].buf,
- tx_q->tx_skbuff_dma[i].len,
- DMA_TO_DEVICE);
- else
- dma_unmap_single(priv->device,
- tx_q->tx_skbuff_dma[i].buf,
- tx_q->tx_skbuff_dma[i].len,
- DMA_TO_DEVICE);
- }
-
- if (tx_q->tx_skbuff[i]) {
- dev_kfree_skb_any(tx_q->tx_skbuff[i]);
- tx_q->tx_skbuff[i] = NULL;
- tx_q->tx_skbuff_dma[i].buf = 0;
- tx_q->tx_skbuff_dma[i].map_as_page = false;
- }
-}
-
-/**
- * init_tx_dma_desc_rings - init the TX descriptor rings
- * @dev: net device structure
- * Description: this function initializes the DMA TX descriptors
- * and allocates the socket buffers. It suppors the chained and ring
- * modes.
- */
-static int init_tx_dma_desc_rings(struct net_device *dev)
-{
- struct stmmac_priv *priv = netdev_priv(dev);
- u32 tx_queue_cnt = priv->plat->tx_queues_to_use;
- u32 queue;
- int i = 0;
-
- for (queue = 0; queue < tx_queue_cnt; queue++) {
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
-
- netif_dbg(priv, probe, priv->dev,
- "(%s) dma_tx_phy=0x%08x\n", __func__,
- (u32)tx_q->dma_tx_phy);
-
- /* Setup the chained descriptor addresses */
- if (priv->mode == STMMAC_CHAIN_MODE) {
- if (priv->extend_desc)
- priv->hw->mode->init(tx_q->dma_etx,
- tx_q->dma_tx_phy,
- DMA_TX_SIZE, 1);
- else
- priv->hw->mode->init(tx_q->dma_tx,
- tx_q->dma_tx_phy,
- DMA_TX_SIZE, 0);
- }
-
- for (i = 0; i < DMA_TX_SIZE; i++) {
- struct dma_desc *p;
-
- if (priv->extend_desc)
- p = &((tx_q->dma_etx + i)->basic);
- else
- p = tx_q->dma_tx + i;
-
- if (priv->synopsys_id >= DWMAC_CORE_4_00) {
- p->des0 = 0;
- p->des1 = 0;
- p->des2 = 0;
- p->des3 = 0;
- } else {
- p->des2 = 0;
- }
-
- tx_q->tx_skbuff_dma[i].buf = 0;
- tx_q->tx_skbuff_dma[i].map_as_page = false;
- tx_q->tx_skbuff_dma[i].len = 0;
- tx_q->tx_skbuff_dma[i].last_segment = false;
- tx_q->tx_skbuff[i] = NULL;
- }
-
- tx_q->dirty_tx = 0;
- tx_q->cur_tx = 0;
- netdev_tx_reset_queue(netdev_get_tx_queue(priv->dev, queue));
+ dev_kfree_skb_any(priv->rx_skbuff[i]);
}
-
- return 0;
+ priv->rx_skbuff[i] = NULL;
}
/**
- * init_rx_dma_desc_rings - init the RX descriptor rings
+ * init_dma_desc_rings - init the RX/TX descriptor rings
* @dev: net device structure
* @flags: gfp flag.
- * Description: this function initializes the DMA RX descriptors
- * and allocates the socket buffers. It suppors the chained and ring
+ * Description: this function initializes the DMA RX/TX descriptors
+ * and allocates the socket buffers. It supports the chained and ring
* modes.
*/
-static int init_rx_dma_desc_rings(struct net_device *dev, gfp_t flags)
+static int init_dma_desc_rings(struct net_device *dev, gfp_t flags)
{
+ int i;
struct stmmac_priv *priv = netdev_priv(dev);
- u32 rx_count = priv->plat->rx_queues_to_use;
unsigned int bfsize = 0;
int ret = -ENOMEM;
- u32 queue;
- int i;
if (priv->hw->mode->set_16kib_bfsize)
bfsize = priv->hw->mode->set_16kib_bfsize(dev->mtu);
@@ -1236,350 +1050,235 @@ static int init_rx_dma_desc_rings(struct net_device *dev, gfp_t flags)
priv->dma_buf_sz = bfsize;
+ netif_dbg(priv, probe, priv->dev,
+ "(%s) dma_rx_phy=0x%08x dma_tx_phy=0x%08x\n",
+ __func__, (u32)priv->dma_rx_phy, (u32)priv->dma_tx_phy);
+
/* RX INITIALIZATION */
netif_dbg(priv, probe, priv->dev,
"SKB addresses:\nskb\t\tskb data\tdma data\n");
- for (queue = 0; queue < rx_count; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- netif_dbg(priv, probe, priv->dev,
- "(%s) dma_rx_phy=0x%08x\n", __func__,
- (u32)rx_q->dma_rx_phy);
-
- for (i = 0; i < DMA_RX_SIZE; i++) {
- struct dma_desc *p;
-
- if (priv->extend_desc)
- p = &((rx_q->dma_erx + i)->basic);
- else
- p = rx_q->dma_rx + i;
-
- ret = stmmac_init_rx_buffers(priv, p, i, flags, queue);
- if (ret)
- goto err_init_rx_buffers;
-
- netif_dbg(priv, probe, priv->dev, "[%p]\t[%p]\t[%x]\n",
- rx_q->rx_skbuff[i],
- rx_q->rx_skbuff[i]->data,
- (unsigned int)rx_q->rx_skbuff_dma[i]);
- }
+ for (i = 0; i < DMA_RX_SIZE; i++) {
+ struct dma_desc *p;
+ if (priv->extend_desc)
+ p = &((priv->dma_erx + i)->basic);
+ else
+ p = priv->dma_rx + i;
- rx_q->cur_rx = 0;
- rx_q->dirty_rx = (unsigned int)(i - DMA_RX_SIZE);
+ ret = stmmac_init_rx_buffers(priv, p, i, flags);
+ if (ret)
+ goto err_init_rx_buffers;
- stmmac_clear_rx_descriptors(priv, queue);
+ netif_dbg(priv, probe, priv->dev, "[%p]\t[%p]\t[%x]\n",
+ priv->rx_skbuff[i], priv->rx_skbuff[i]->data,
+ (unsigned int)priv->rx_skbuff_dma[i]);
+ }
+ priv->cur_rx = 0;
+ priv->dirty_rx = (unsigned int)(i - DMA_RX_SIZE);
+ buf_sz = bfsize;
- if (priv->mode == STMMAC_CHAIN_MODE) {
- if (priv->extend_desc)
- priv->hw->mode->init(rx_q->dma_erx,
- rx_q->dma_rx_phy,
- DMA_RX_SIZE, 1);
- else
- priv->hw->mode->init(rx_q->dma_rx,
- rx_q->dma_rx_phy,
- DMA_RX_SIZE, 0);
+ /* Setup the chained descriptor addresses */
+ if (priv->mode == STMMAC_CHAIN_MODE) {
+ if (priv->extend_desc) {
+ priv->hw->mode->init(priv->dma_erx, priv->dma_rx_phy,
+ DMA_RX_SIZE, 1);
+ priv->hw->mode->init(priv->dma_etx, priv->dma_tx_phy,
+ DMA_TX_SIZE, 1);
+ } else {
+ priv->hw->mode->init(priv->dma_rx, priv->dma_rx_phy,
+ DMA_RX_SIZE, 0);
+ priv->hw->mode->init(priv->dma_tx, priv->dma_tx_phy,
+ DMA_TX_SIZE, 0);
}
}
- buf_sz = bfsize;
-
- return 0;
+ /* TX INITIALIZATION */
+ for (i = 0; i < DMA_TX_SIZE; i++) {
+ struct dma_desc *p;
+ if (priv->extend_desc)
+ p = &((priv->dma_etx + i)->basic);
+ else
+ p = priv->dma_tx + i;
-err_init_rx_buffers:
- while (queue-- >= 0) {
- while (--i >= 0)
- stmmac_free_rx_buffers(priv, queue, i);
+ if (priv->synopsys_id >= DWMAC_CORE_4_00) {
+ p->des0 = 0;
+ p->des1 = 0;
+ p->des2 = 0;
+ p->des3 = 0;
+ } else {
+ p->des2 = 0;
+ }
- i = DMA_RX_SIZE;
+ priv->tx_skbuff_dma[i].buf = 0;
+ priv->tx_skbuff_dma[i].map_as_page = false;
+ priv->tx_skbuff_dma[i].len = 0;
+ priv->tx_skbuff_dma[i].last_segment = false;
+ priv->tx_skbuff[i] = NULL;
}
- return ret;
-}
-
-/**
- * init_dma_desc_rings - init the RX/TX descriptor rings
- * @dev: net device structure
- * @flags: gfp flag.
- * Description: this function initializes the DMA RX/TX descriptors
- * and allocates the socket buffers. It suppors the chained and ring
- * modes.
- */
-static int init_dma_desc_rings(struct net_device *dev, gfp_t flags)
-{
- struct stmmac_priv *priv = netdev_priv(dev);
- int ret = init_rx_dma_desc_rings(dev, flags);
-
- if (ret)
- return ret;
+ priv->dirty_tx = 0;
+ priv->cur_tx = 0;
+ netdev_reset_queue(priv->dev);
- ret = init_tx_dma_desc_rings(dev);
+ stmmac_clear_descriptors(priv);
if (netif_msg_hw(priv))
stmmac_display_rings(priv);
+ return 0;
+err_init_rx_buffers:
+ while (--i >= 0)
+ stmmac_free_rx_buffers(priv, i);
return ret;
}
-static void dma_free_rx_skbufs(struct stmmac_priv *priv, u32 queue)
+static void dma_free_rx_skbufs(struct stmmac_priv *priv)
{
int i;
for (i = 0; i < DMA_RX_SIZE; i++)
- stmmac_free_rx_buffers(priv, queue, i);
+ stmmac_free_rx_buffers(priv, i);
}
-static void dma_free_tx_skbufs(struct stmmac_priv *priv, u32 queue)
+static void dma_free_tx_skbufs(struct stmmac_priv *priv)
{
int i;
- for (i = 0; i < DMA_TX_SIZE; i++)
- stmmac_free_tx_buffers(priv, queue, i);
-}
-
-/**
- * free_rx_dma_desc_resources - free RX DMA resources
- * @priv: driver private structure
- */
-static void free_rx_dma_desc_resources(struct stmmac_priv *priv)
-{
- u32 rx_count = priv->plat->rx_queues_to_use;
- u32 queue = 0;
-
- if (!priv->rx_queue)
- return;
-
- /* Free RX queue resources */
- for (queue = 0; queue < rx_count; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- if (!rx_q)
- break;
-
- /* Release the DMA RX socket buffers */
- dma_free_rx_skbufs(priv, queue);
-
- kfree(rx_q->rx_skbuff);
-
- kfree(rx_q->rx_skbuff_dma);
-
- if (!priv->extend_desc)
- dma_free_coherent(priv->device,
- 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 *
- sizeof(struct dma_extended_desc),
- rx_q->dma_erx,
- rx_q->dma_rx_phy);
- }
-
- kfree(priv->rx_queue);
-}
-
-/**
- * free_tx_dma_desc_resources - free TX DMA resources
- * @priv: driver private structure
- */
-static void free_tx_dma_desc_resources(struct stmmac_priv *priv)
-{
- u32 tx_count = priv->plat->tx_queues_to_use;
- u32 queue = 0;
-
- if (!priv->tx_queue)
- return;
-
- /* Free TX queue resources */
- for (queue = 0; queue < tx_count; queue++) {
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
-
- if (!tx_q)
- break;
-
- /* Release the DMA TX socket buffers */
- dma_free_tx_skbufs(priv, queue);
-
- kfree(tx_q->tx_skbuff);
-
- kfree(tx_q->tx_skbuff_dma);
-
- if (!priv->extend_desc)
- dma_free_coherent(priv->device,
- DMA_TX_SIZE * sizeof(struct dma_desc),
- tx_q->dma_tx,
- tx_q->dma_tx_phy);
- else
- dma_free_coherent(priv->device, DMA_TX_SIZE *
- sizeof(struct dma_extended_desc),
- tx_q->dma_etx,
- tx_q->dma_tx_phy);
- }
-
- kfree(priv->tx_queue);
-}
-
-/**
- * free_dma_desc_resources - free All DMA resources
- * @priv: driver private structure
- */
-static void free_dma_desc_resources(struct stmmac_priv *priv)
-{
- free_rx_dma_desc_resources(priv);
- free_tx_dma_desc_resources(priv);
-}
-
-/**
- * alloc_rx_dma_desc_resources - alloc RX resources.
- * @priv: private structure
- * Description: according to which descriptor can be used (extend or basic)
- * this function allocates the resources for RX paths. It pre-allocates the
- * RX socket buffer in order to allow zero-copy mechanism.
- */
-static int alloc_rx_dma_desc_resources(struct stmmac_priv *priv)
-{
- u32 rx_count = priv->plat->rx_queues_to_use;
- int ret = -ENOMEM;
- u32 queue = 0;
-
- /* Allocate RX queues array */
- priv->rx_queue = kmalloc_array(rx_count,
- sizeof(struct stmmac_rx_queue),
- GFP_KERNEL);
- if (!priv->rx_queue) {
- kfree(priv->rx_queue);
- return -ENOMEM;
- }
-
- /* RX queues buffers and DMA */
- for (queue = 0; queue < rx_count; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- rx_q->queue_index = queue;
- rx_q->priv_data = priv;
-
- rx_q->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE,
- sizeof(dma_addr_t),
- GFP_KERNEL);
- if (!rx_q->rx_skbuff_dma)
- goto err_dma_buffers;
-
- rx_q->rx_skbuff = kmalloc_array(DMA_RX_SIZE,
- sizeof(struct sk_buff *),
- GFP_KERNEL);
- if (!rx_q->rx_skbuff)
- goto err_dma_buffers;
-
- if (priv->extend_desc) {
- rx_q->dma_erx = dma_zalloc_coherent(priv->device,
- (DMA_RX_SIZE * sizeof(struct dma_extended_desc)),
- &rx_q->dma_rx_phy, GFP_KERNEL);
-
- if (!rx_q->dma_erx)
- goto err_dma_buffers;
- } else {
- rx_q->dma_rx = dma_zalloc_coherent(priv->device,
- (DMA_RX_SIZE * sizeof(struct dma_desc)),
- &rx_q->dma_rx_phy, GFP_KERNEL);
+ for (i = 0; i < DMA_TX_SIZE; i++) {
+ if (priv->tx_skbuff_dma[i].buf) {
+ if (priv->tx_skbuff_dma[i].map_as_page)
+ dma_unmap_page(priv->device,
+ priv->tx_skbuff_dma[i].buf,
+ priv->tx_skbuff_dma[i].len,
+ DMA_TO_DEVICE);
+ else
+ dma_unmap_single(priv->device,
+ priv->tx_skbuff_dma[i].buf,
+ priv->tx_skbuff_dma[i].len,
+ DMA_TO_DEVICE);
+ }
- if (!rx_q->dma_rx)
- goto err_dma_buffers;
+ if (priv->tx_skbuff[i]) {
+ dev_kfree_skb_any(priv->tx_skbuff[i]);
+ priv->tx_skbuff[i] = NULL;
+ priv->tx_skbuff_dma[i].buf = 0;
+ priv->tx_skbuff_dma[i].map_as_page = false;
}
}
-
- return 0;
-
-err_dma_buffers:
- free_rx_dma_desc_resources(priv);
-
- return ret;
}
/**
- * alloc_tx_dma_desc_resources - alloc TX resources.
+ * alloc_dma_desc_resources - alloc TX/RX resources.
* @priv: private structure
* Description: according to which descriptor can be used (extend or basic)
- * this function allocates the resources for TX paths.
+ * this function allocates the resources for TX and RX paths. In case of
+ * reception, for example, it pre-allocated the RX socket buffer in order to
+ * allow zero-copy mechanism.
*/
-static int alloc_tx_dma_desc_resources(struct stmmac_priv *priv)
+static int alloc_dma_desc_resources(struct stmmac_priv *priv)
{
- u32 tx_count = priv->plat->tx_queues_to_use;
int ret = -ENOMEM;
- u32 queue = 0;
- /* Allocate TX queues array */
- priv->tx_queue = kmalloc_array(tx_count,
- sizeof(struct stmmac_tx_queue),
- GFP_KERNEL);
- if (!priv->tx_queue)
+ priv->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE, sizeof(dma_addr_t),
+ GFP_KERNEL);
+ if (!priv->rx_skbuff_dma)
return -ENOMEM;
- /* TX queues buffers and DMA */
- for (queue = 0; queue < tx_count; queue++) {
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
-
- tx_q->queue_index = queue;
- tx_q->priv_data = priv;
-
- tx_q->tx_skbuff_dma = kmalloc_array(DMA_TX_SIZE,
- sizeof(struct stmmac_tx_info),
- GFP_KERNEL);
-
- if (!tx_q->tx_skbuff_dma)
- goto err_dma_buffers;
-
- tx_q->tx_skbuff = kmalloc_array(DMA_TX_SIZE,
- sizeof(struct sk_buff *),
+ priv->rx_skbuff = kmalloc_array(DMA_RX_SIZE, sizeof(struct sk_buff *),
+ GFP_KERNEL);
+ if (!priv->rx_skbuff)
+ goto err_rx_skbuff;
+
+ priv->tx_skbuff_dma = kmalloc_array(DMA_TX_SIZE,
+ sizeof(*priv->tx_skbuff_dma),
+ GFP_KERNEL);
+ if (!priv->tx_skbuff_dma)
+ goto err_tx_skbuff_dma;
+
+ priv->tx_skbuff = kmalloc_array(DMA_TX_SIZE, sizeof(struct sk_buff *),
+ GFP_KERNEL);
+ if (!priv->tx_skbuff)
+ goto err_tx_skbuff;
+
+ if (priv->extend_desc) {
+ priv->dma_erx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
+ sizeof(struct
+ dma_extended_desc),
+ &priv->dma_rx_phy,
GFP_KERNEL);
- if (!tx_q->tx_skbuff)
- goto err_dma_buffers;
-
- if (priv->extend_desc) {
- tx_q->dma_etx =
- dma_zalloc_coherent(priv->device,
- (DMA_TX_SIZE * sizeof(struct dma_extended_desc)),
- &tx_q->dma_tx_phy, GFP_KERNEL);
-
- if (!tx_q->dma_etx)
- goto err_dma_buffers;
- } else {
- tx_q->dma_tx =
- dma_zalloc_coherent(priv->device,
- (DMA_TX_SIZE * sizeof(struct dma_desc)),
- &tx_q->dma_tx_phy, GFP_KERNEL);
+ if (!priv->dma_erx)
+ goto err_dma;
- if (!tx_q->dma_tx)
- goto err_dma_buffers;
+ priv->dma_etx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
+ sizeof(struct
+ dma_extended_desc),
+ &priv->dma_tx_phy,
+ GFP_KERNEL);
+ if (!priv->dma_etx) {
+ dma_free_coherent(priv->device, DMA_RX_SIZE *
+ sizeof(struct dma_extended_desc),
+ priv->dma_erx, priv->dma_rx_phy);
+ goto err_dma;
+ }
+ } else {
+ priv->dma_rx = dma_zalloc_coherent(priv->device, DMA_RX_SIZE *
+ sizeof(struct dma_desc),
+ &priv->dma_rx_phy,
+ GFP_KERNEL);
+ if (!priv->dma_rx)
+ goto err_dma;
+
+ priv->dma_tx = dma_zalloc_coherent(priv->device, DMA_TX_SIZE *
+ sizeof(struct dma_desc),
+ &priv->dma_tx_phy,
+ GFP_KERNEL);
+ if (!priv->dma_tx) {
+ dma_free_coherent(priv->device, DMA_RX_SIZE *
+ sizeof(struct dma_desc),
+ priv->dma_rx, priv->dma_rx_phy);
+ goto err_dma;
}
}
return 0;
-err_dma_buffers:
- free_tx_dma_desc_resources(priv);
-
+err_dma:
+ kfree(priv->tx_skbuff);
+err_tx_skbuff:
+ kfree(priv->tx_skbuff_dma);
+err_tx_skbuff_dma:
+ kfree(priv->rx_skbuff);
+err_rx_skbuff:
+ kfree(priv->rx_skbuff_dma);
return ret;
}
-/**
- * alloc_dma_desc_resources - alloc TX/RX resources.
- * @priv: private structure
- * Description: according to which descriptor can be used (extend or basic)
- * this function allocates the resources for TX and RX paths. In case of
- * reception, for example, it pre-allocated the RX socket buffer in order to
- * allow zero-copy mechanism.
- */
-static int alloc_dma_desc_resources(struct stmmac_priv *priv)
+static void free_dma_desc_resources(struct stmmac_priv *priv)
{
- int ret = 0;
-
- ret = alloc_tx_dma_desc_resources(priv);
- if (ret)
- return ret;
-
- ret = alloc_rx_dma_desc_resources(priv);
-
- return ret;
+ /* Release the DMA TX/RX socket buffers */
+ dma_free_rx_skbufs(priv);
+ dma_free_tx_skbufs(priv);
+
+ /* Free DMA regions of consistent memory previously allocated */
+ if (!priv->extend_desc) {
+ dma_free_coherent(priv->device,
+ DMA_TX_SIZE * sizeof(struct dma_desc),
+ priv->dma_tx, priv->dma_tx_phy);
+ dma_free_coherent(priv->device,
+ DMA_RX_SIZE * sizeof(struct dma_desc),
+ priv->dma_rx, priv->dma_rx_phy);
+ } else {
+ dma_free_coherent(priv->device, DMA_TX_SIZE *
+ sizeof(struct dma_extended_desc),
+ priv->dma_etx, priv->dma_tx_phy);
+ dma_free_coherent(priv->device, DMA_RX_SIZE *
+ sizeof(struct dma_extended_desc),
+ priv->dma_erx, priv->dma_rx_phy);
+ }
+ kfree(priv->rx_skbuff_dma);
+ kfree(priv->rx_skbuff);
+ kfree(priv->tx_skbuff_dma);
+ kfree(priv->tx_skbuff);
}
/**
@@ -1743,28 +1442,26 @@ static void stmmac_dma_operation_mode(struct stmmac_priv *priv)
/**
* stmmac_tx_clean - to manage the transmission completion
* @priv: driver private structure
- * @queue: TX queue index
* Description: it reclaims the transmit resources after transmission completes.
*/
-static void stmmac_tx_clean(struct stmmac_priv *priv, u32 queue)
+static void stmmac_tx_clean(struct stmmac_priv *priv)
{
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
unsigned int bytes_compl = 0, pkts_compl = 0;
- unsigned int entry = tx_q->dirty_tx;
+ unsigned int entry = priv->dirty_tx;
netif_tx_lock(priv->dev);
priv->xstats.tx_clean++;
- while (entry != tx_q->cur_tx) {
- struct sk_buff *skb = tx_q->tx_skbuff[entry];
+ while (entry != priv->cur_tx) {
+ struct sk_buff *skb = priv->tx_skbuff[entry];
struct dma_desc *p;
int status;
if (priv->extend_desc)
- p = (struct dma_desc *)(tx_q->dma_etx + entry);
+ p = (struct dma_desc *)(priv->dma_etx + entry);
else
- p = tx_q->dma_tx + entry;
+ p = priv->dma_tx + entry;
status = priv->hw->desc->tx_status(&priv->dev->stats,
&priv->xstats, p,
@@ -1785,50 +1482,48 @@ static void stmmac_tx_clean(struct stmmac_priv *priv, u32 queue)
stmmac_get_tx_hwtstamp(priv, p, skb);
}
- if (likely(tx_q->tx_skbuff_dma[entry].buf)) {
- if (tx_q->tx_skbuff_dma[entry].map_as_page)
+ if (likely(priv->tx_skbuff_dma[entry].buf)) {
+ if (priv->tx_skbuff_dma[entry].map_as_page)
dma_unmap_page(priv->device,
- tx_q->tx_skbuff_dma[entry].buf,
- tx_q->tx_skbuff_dma[entry].len,
+ priv->tx_skbuff_dma[entry].buf,
+ priv->tx_skbuff_dma[entry].len,
DMA_TO_DEVICE);
else
dma_unmap_single(priv->device,
- tx_q->tx_skbuff_dma[entry].buf,
- tx_q->tx_skbuff_dma[entry].len,
+ priv->tx_skbuff_dma[entry].buf,
+ priv->tx_skbuff_dma[entry].len,
DMA_TO_DEVICE);
- tx_q->tx_skbuff_dma[entry].buf = 0;
- tx_q->tx_skbuff_dma[entry].len = 0;
- tx_q->tx_skbuff_dma[entry].map_as_page = false;
+ priv->tx_skbuff_dma[entry].buf = 0;
+ priv->tx_skbuff_dma[entry].len = 0;
+ priv->tx_skbuff_dma[entry].map_as_page = false;
}
if (priv->hw->mode->clean_desc3)
- priv->hw->mode->clean_desc3(tx_q, p);
+ priv->hw->mode->clean_desc3(priv, p);
- tx_q->tx_skbuff_dma[entry].last_segment = false;
- tx_q->tx_skbuff_dma[entry].is_jumbo = false;
+ priv->tx_skbuff_dma[entry].last_segment = false;
+ priv->tx_skbuff_dma[entry].is_jumbo = false;
if (likely(skb != NULL)) {
pkts_compl++;
bytes_compl += skb->len;
dev_consume_skb_any(skb);
- tx_q->tx_skbuff[entry] = NULL;
+ priv->tx_skbuff[entry] = NULL;
}
priv->hw->desc->release_tx_desc(p, priv->mode);
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
}
- tx_q->dirty_tx = entry;
+ priv->dirty_tx = entry;
- netdev_tx_completed_queue(netdev_get_tx_queue(priv->dev, queue),
- pkts_compl, bytes_compl);
+ netdev_completed_queue(priv->dev, pkts_compl, bytes_compl);
- if (unlikely(netif_tx_queue_stopped(netdev_get_tx_queue(priv->dev,
- queue))) &&
- stmmac_tx_avail(priv, queue) > STMMAC_TX_THRESH) {
+ if (unlikely(netif_queue_stopped(priv->dev) &&
+ stmmac_tx_avail(priv) > STMMAC_TX_THRESH)) {
netif_dbg(priv, tx_done, priv->dev,
"%s: restart transmit\n", __func__);
- netif_tx_wake_queue(netdev_get_tx_queue(priv->dev, queue));
+ netif_wake_queue(priv->dev);
}
if ((priv->eee_enabled) && (!priv->tx_path_in_lpi_mode)) {
@@ -1851,36 +1546,33 @@ static inline void stmmac_disable_dma_irq(struct stmmac_priv *priv, u32 chan)
/**
* stmmac_tx_err - to manage the tx error
* @priv: driver private structure
- * @queue: queue index
+ * @chan: channel index
* Description: it cleans the descriptors and restarts the transmission
* in case of transmission errors.
*/
-static void stmmac_tx_err(struct stmmac_priv *priv, u32 queue)
+static void stmmac_tx_err(struct stmmac_priv *priv, u32 chan)
{
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
- u32 chan = queue;
int i;
-
- netif_tx_stop_queue(netdev_get_tx_queue(priv->dev, queue));
+ netif_stop_queue(priv->dev);
stmmac_stop_tx_dma(priv, chan);
- dma_free_tx_skbufs(priv, queue);
+ dma_free_tx_skbufs(priv);
for (i = 0; i < DMA_TX_SIZE; i++)
if (priv->extend_desc)
- priv->hw->desc->init_tx_desc(&tx_q->dma_etx[i].basic,
+ priv->hw->desc->init_tx_desc(&priv->dma_etx[i].basic,
priv->mode,
(i == DMA_TX_SIZE - 1));
else
- priv->hw->desc->init_tx_desc(&tx_q->dma_tx[i],
+ priv->hw->desc->init_tx_desc(&priv->dma_tx[i],
priv->mode,
(i == DMA_TX_SIZE - 1));
- tx_q->dirty_tx = 0;
- tx_q->cur_tx = 0;
- netdev_tx_reset_queue(netdev_get_tx_queue(priv->dev, queue));
+ priv->dirty_tx = 0;
+ priv->cur_tx = 0;
+ netdev_reset_queue(priv->dev);
stmmac_start_tx_dma(priv, chan);
priv->dev->stats.tx_errors++;
- netif_tx_wake_queue(netdev_get_tx_queue(priv->dev, queue));
+ netif_wake_queue(priv->dev);
}
/**
@@ -1925,14 +1617,12 @@ static void stmmac_dma_interrupt(struct stmmac_priv *priv)
u32 chan;
for (chan = 0; chan < tx_channel_count; chan++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[chan];
-
status = priv->hw->dma->dma_interrupt(priv->ioaddr,
&priv->xstats, chan);
if (likely((status & handle_rx)) || (status & handle_tx)) {
- if (likely(napi_schedule_prep(&rx_q->napi))) {
+ if (likely(napi_schedule_prep(&priv->napi))) {
stmmac_disable_dma_irq(priv, chan);
- __napi_schedule(&rx_q->napi);
+ __napi_schedule(&priv->napi);
}
}
@@ -2065,8 +1755,6 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
{
u32 rx_channels_count = priv->plat->rx_queues_to_use;
u32 tx_channels_count = priv->plat->tx_queues_to_use;
- struct stmmac_rx_queue *rx_q;
- struct stmmac_tx_queue *tx_q;
u32 dummy_dma_rx_phy = 0;
u32 dummy_dma_tx_phy = 0;
u32 chan = 0;
@@ -2094,43 +1782,36 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
/* DMA RX Channel Configuration */
for (chan = 0; chan < rx_channels_count; chan++) {
- rx_q = &priv->rx_queue[chan];
-
priv->hw->dma->init_rx_chan(priv->ioaddr,
priv->plat->dma_cfg,
- rx_q->dma_rx_phy, chan);
+ priv->dma_rx_phy, chan);
- rx_q->rx_tail_addr = rx_q->dma_rx_phy +
+ priv->rx_tail_addr = priv->dma_rx_phy +
(DMA_RX_SIZE * sizeof(struct dma_desc));
priv->hw->dma->set_rx_tail_ptr(priv->ioaddr,
- rx_q->rx_tail_addr,
+ priv->rx_tail_addr,
chan);
}
/* DMA TX Channel Configuration */
for (chan = 0; chan < tx_channels_count; chan++) {
- tx_q = &priv->tx_queue[chan];
-
priv->hw->dma->init_chan(priv->ioaddr,
- priv->plat->dma_cfg,
- chan);
+ priv->plat->dma_cfg,
+ chan);
priv->hw->dma->init_tx_chan(priv->ioaddr,
priv->plat->dma_cfg,
- tx_q->dma_tx_phy, chan);
+ priv->dma_tx_phy, chan);
- tx_q->tx_tail_addr = tx_q->dma_tx_phy +
+ priv->tx_tail_addr = priv->dma_tx_phy +
(DMA_TX_SIZE * sizeof(struct dma_desc));
priv->hw->dma->set_tx_tail_ptr(priv->ioaddr,
- tx_q->tx_tail_addr,
+ priv->tx_tail_addr,
chan);
}
} else {
- rx_q = &priv->rx_queue[chan];
- tx_q = &priv->tx_queue[chan];
-
priv->hw->dma->init(priv->ioaddr, priv->plat->dma_cfg,
- tx_q->dma_tx_phy, rx_q->dma_rx_phy, atds);
+ priv->dma_tx_phy, priv->dma_rx_phy, atds);
}
if (priv->plat->axi && priv->hw->dma->axi)
@@ -2148,70 +1829,8 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
static void stmmac_tx_timer(unsigned long data)
{
struct stmmac_priv *priv = (struct stmmac_priv *)data;
- u32 tx_queues_count = priv->plat->tx_queues_to_use;
- u32 queue;
-
- /* let's scan all the tx queues */
- for (queue = 0; queue < tx_queues_count; queue++)
- stmmac_tx_clean(priv, queue);
-}
-
-/**
- * stmmac_stop_all_queues - Stop all queues
- * @priv: driver private structure
- */
-static void stmmac_stop_all_queues(struct stmmac_priv *priv)
-{
- u32 tx_queues_cnt = priv->plat->tx_queues_to_use;
- u32 queue;
-
- for (queue = 0; queue < tx_queues_cnt; queue++)
- netif_tx_stop_queue(netdev_get_tx_queue(priv->dev, queue));
-}
-
-/**
- * stmmac_start_all_queues - Start all queues
- * @priv: driver private structure
- */
-static void stmmac_start_all_queues(struct stmmac_priv *priv)
-{
- u32 tx_queues_cnt = priv->plat->tx_queues_to_use;
- u32 queue;
- for (queue = 0; queue < tx_queues_cnt; queue++)
- netif_tx_start_queue(netdev_get_tx_queue(priv->dev, queue));
-}
-
-/**
- * stmmac_disable_all_queues - Disable all queues
- * @priv: driver private structure
- */
-static void stmmac_disable_all_queues(struct stmmac_priv *priv)
-{
- u32 rx_queues_cnt = priv->plat->rx_queues_to_use;
- u32 queue;
-
- for (queue = 0; queue < rx_queues_cnt; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- napi_disable(&rx_q->napi);
- }
-}
-
-/**
- * stmmac_enable_all_queues - Enable all queues
- * @priv: driver private structure
- */
-static void stmmac_enable_all_queues(struct stmmac_priv *priv)
-{
- u32 rx_queues_cnt = priv->plat->rx_queues_to_use;
- u32 queue;
-
- for (queue = 0; queue < rx_queues_cnt; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- napi_enable(&rx_q->napi);
- }
+ stmmac_tx_clean(priv);
}
/**
@@ -2570,8 +2189,23 @@ static int stmmac_open(struct net_device *dev)
memset(&priv->xstats, 0, sizeof(struct stmmac_extra_stats));
priv->xstats.threshold = tc;
+ priv->dma_buf_sz = STMMAC_ALIGN(buf_sz);
priv->rx_copybreak = STMMAC_RX_COPYBREAK;
+ ret = alloc_dma_desc_resources(priv);
+ if (ret < 0) {
+ netdev_err(priv->dev, "%s: DMA descriptors allocation failed\n",
+ __func__);
+ goto dma_desc_error;
+ }
+
+ ret = init_dma_desc_rings(dev, GFP_KERNEL);
+ if (ret < 0) {
+ netdev_err(priv->dev, "%s: DMA descriptors initialization failed\n",
+ __func__);
+ goto init_error;
+ }
+
ret = stmmac_hw_setup(dev, true);
if (ret < 0) {
netdev_err(priv->dev, "%s: Hw setup failed\n", __func__);
@@ -2617,8 +2251,8 @@ static int stmmac_open(struct net_device *dev)
}
}
- stmmac_enable_all_queues(priv);
- stmmac_start_all_queues(priv);
+ napi_enable(&priv->napi);
+ netif_start_queue(dev);
return 0;
@@ -2635,7 +2269,7 @@ static int stmmac_open(struct net_device *dev)
stmmac_hw_teardown(dev);
init_error:
free_dma_desc_resources(priv);
-
+dma_desc_error:
if (dev->phydev)
phy_disconnect(dev->phydev);
@@ -2661,9 +2295,9 @@ static int stmmac_release(struct net_device *dev)
phy_disconnect(dev->phydev);
}
- stmmac_stop_all_queues(priv);
+ netif_stop_queue(dev);
- stmmac_disable_all_queues(priv);
+ napi_disable(&priv->napi);
del_timer_sync(&priv->txtimer);
@@ -2700,24 +2334,22 @@ static int stmmac_release(struct net_device *dev)
* @des: buffer start address
* @total_len: total length to fill in descriptors
* @last_segmant: condition for the last descriptor
- * @queue: TX queue index
* Description:
* This function fills descriptor and request new descriptors according to
* buffer length to fill
*/
static void stmmac_tso_allocator(struct stmmac_priv *priv, unsigned int des,
- int total_len, bool last_segment, u32 queue)
+ int total_len, bool last_segment)
{
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
struct dma_desc *desc;
- u32 buff_size;
int tmp_len;
+ u32 buff_size;
tmp_len = total_len;
while (tmp_len > 0) {
- tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
- desc = tx_q->dma_tx + tx_q->cur_tx;
+ priv->cur_tx = STMMAC_GET_ENTRY(priv->cur_tx, DMA_TX_SIZE);
+ desc = priv->dma_tx + priv->cur_tx;
desc->des0 = cpu_to_le32(des + (total_len - tmp_len));
buff_size = tmp_len >= TSO_MAX_BUFF_SIZE ?
@@ -2761,27 +2393,23 @@ static void stmmac_tso_allocator(struct stmmac_priv *priv, unsigned int des,
*/
static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
{
- struct dma_desc *desc, *first, *mss_desc = NULL;
+ u32 pay_len, mss;
+ int tmp_pay_len = 0;
struct stmmac_priv *priv = netdev_priv(dev);
- u32 queue = skb_get_queue_mapping(skb);
int nfrags = skb_shinfo(skb)->nr_frags;
unsigned int first_entry, des;
- struct stmmac_tx_queue *tx_q;
- int tmp_pay_len = 0;
- u32 pay_len, mss;
+ struct dma_desc *desc, *first, *mss_desc = NULL;
u8 proto_hdr_len;
int i;
- tx_q = &priv->tx_queue[queue];
-
/* Compute header lengths */
proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
/* Desc availability based on threshold should be enough safe */
- if (unlikely(stmmac_tx_avail(priv, queue) <
+ if (unlikely(stmmac_tx_avail(priv) <
(((skb->len - proto_hdr_len) / TSO_MAX_BUFF_SIZE + 1)))) {
- if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, queue))) {
- netif_tx_stop_queue(netdev_get_tx_queue(dev, queue));
+ if (!netif_queue_stopped(dev)) {
+ netif_stop_queue(dev);
/* This is a hard error, log it. */
netdev_err(priv->dev,
"%s: Tx Ring full when queue awake\n",
@@ -2796,10 +2424,10 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
/* set new MSS value if needed */
if (mss != priv->mss) {
- mss_desc = tx_q->dma_tx + tx_q->cur_tx;
+ mss_desc = priv->dma_tx + priv->cur_tx;
priv->hw->desc->set_mss(mss_desc, mss);
priv->mss = mss;
- tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
+ priv->cur_tx = STMMAC_GET_ENTRY(priv->cur_tx, DMA_TX_SIZE);
}
if (netif_msg_tx_queued(priv)) {
@@ -2809,9 +2437,9 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
skb->data_len);
}
- first_entry = tx_q->cur_tx;
+ first_entry = priv->cur_tx;
- desc = tx_q->dma_tx + first_entry;
+ desc = priv->dma_tx + first_entry;
first = desc;
/* first descriptor: fill Headers on Buf1 */
@@ -2820,9 +2448,9 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
if (dma_mapping_error(priv->device, des))
goto dma_map_err;
- tx_q->tx_skbuff_dma[first_entry].buf = des;
- tx_q->tx_skbuff_dma[first_entry].len = skb_headlen(skb);
- tx_q->tx_skbuff[first_entry] = skb;
+ priv->tx_skbuff_dma[first_entry].buf = des;
+ priv->tx_skbuff_dma[first_entry].len = skb_headlen(skb);
+ priv->tx_skbuff[first_entry] = skb;
first->des0 = cpu_to_le32(des);
@@ -2833,7 +2461,7 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
/* If needed take extra descriptors to fill the remaining payload */
tmp_pay_len = pay_len - TSO_MAX_BUFF_SIZE;
- stmmac_tso_allocator(priv, des, tmp_pay_len, (nfrags == 0), queue);
+ stmmac_tso_allocator(priv, des, tmp_pay_len, (nfrags == 0));
/* Prepare fragments */
for (i = 0; i < nfrags; i++) {
@@ -2846,22 +2474,22 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
goto dma_map_err;
stmmac_tso_allocator(priv, des, skb_frag_size(frag),
- (i == nfrags - 1), queue);
+ (i == nfrags - 1));
- tx_q->tx_skbuff_dma[tx_q->cur_tx].buf = des;
- tx_q->tx_skbuff_dma[tx_q->cur_tx].len = skb_frag_size(frag);
- tx_q->tx_skbuff[tx_q->cur_tx] = NULL;
- tx_q->tx_skbuff_dma[tx_q->cur_tx].map_as_page = true;
+ priv->tx_skbuff_dma[priv->cur_tx].buf = des;
+ priv->tx_skbuff_dma[priv->cur_tx].len = skb_frag_size(frag);
+ priv->tx_skbuff[priv->cur_tx] = NULL;
+ priv->tx_skbuff_dma[priv->cur_tx].map_as_page = true;
}
- tx_q->tx_skbuff_dma[tx_q->cur_tx].last_segment = true;
+ priv->tx_skbuff_dma[priv->cur_tx].last_segment = true;
- tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
+ priv->cur_tx = STMMAC_GET_ENTRY(priv->cur_tx, DMA_TX_SIZE);
- if (unlikely(stmmac_tx_avail(priv, queue) <= (MAX_SKB_FRAGS + 1))) {
+ if (unlikely(stmmac_tx_avail(priv) <= (MAX_SKB_FRAGS + 1))) {
netif_dbg(priv, hw, priv->dev, "%s: stop transmitted packets\n",
__func__);
- netif_tx_stop_queue(netdev_get_tx_queue(dev, queue));
+ netif_stop_queue(dev);
}
dev->stats.tx_bytes += skb->len;
@@ -2893,7 +2521,7 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
priv->hw->desc->prepare_tso_tx_desc(first, 1,
proto_hdr_len,
pay_len,
- 1, tx_q->tx_skbuff_dma[first_entry].last_segment,
+ 1, priv->tx_skbuff_dma[first_entry].last_segment,
tcp_hdrlen(skb) / 4, (skb->len - proto_hdr_len));
/* If context desc is used to change MSS */
@@ -2908,20 +2536,20 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
if (netif_msg_pktdata(priv)) {
pr_info("%s: curr=%d dirty=%d f=%d, e=%d, f_p=%p, nfrags %d\n",
- __func__, tx_q->cur_tx, tx_q->dirty_tx, first_entry,
- tx_q->cur_tx, first, nfrags);
+ __func__, priv->cur_tx, priv->dirty_tx, first_entry,
+ priv->cur_tx, first, nfrags);
- priv->hw->desc->display_ring((void *)tx_q->dma_tx, DMA_TX_SIZE,
+ priv->hw->desc->display_ring((void *)priv->dma_tx, DMA_TX_SIZE,
0);
pr_info(">>> frame to be transmitted: ");
print_pkt(skb->data, skb_headlen(skb));
}
- netdev_tx_sent_queue(netdev_get_tx_queue(dev, queue), skb->len);
+ netdev_sent_queue(dev, skb->len);
- priv->hw->dma->set_tx_tail_ptr(priv->ioaddr, tx_q->tx_tail_addr,
- queue);
+ priv->hw->dma->set_tx_tail_ptr(priv->ioaddr, priv->tx_tail_addr,
+ STMMAC_CHAN0);
return NETDEV_TX_OK;
@@ -2945,25 +2573,21 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
struct stmmac_priv *priv = netdev_priv(dev);
unsigned int nopaged_len = skb_headlen(skb);
int i, csum_insertion = 0, is_jumbo = 0;
- u32 queue = skb_get_queue_mapping(skb);
int nfrags = skb_shinfo(skb)->nr_frags;
unsigned int entry, first_entry;
struct dma_desc *desc, *first;
- struct stmmac_tx_queue *tx_q;
unsigned int enh_desc;
unsigned int des;
- tx_q = &priv->tx_queue[queue];
-
/* Manage oversized TCP frames for GMAC4 device */
if (skb_is_gso(skb) && priv->tso) {
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
return stmmac_tso_xmit(skb, dev);
}
- if (unlikely(stmmac_tx_avail(priv, queue) < nfrags + 1)) {
- if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, queue))) {
- netif_tx_stop_queue(netdev_get_tx_queue(dev, queue));
+ if (unlikely(stmmac_tx_avail(priv) < nfrags + 1)) {
+ if (!netif_queue_stopped(dev)) {
+ netif_stop_queue(dev);
/* This is a hard error, log it. */
netdev_err(priv->dev,
"%s: Tx Ring full when queue awake\n",
@@ -2975,19 +2599,19 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
if (priv->tx_path_in_lpi_mode)
stmmac_disable_eee_mode(priv);
- entry = tx_q->cur_tx;
+ entry = priv->cur_tx;
first_entry = entry;
csum_insertion = (skb->ip_summed == CHECKSUM_PARTIAL);
if (likely(priv->extend_desc))
- desc = (struct dma_desc *)(tx_q->dma_etx + entry);
+ desc = (struct dma_desc *)(priv->dma_etx + entry);
else
- desc = tx_q->dma_tx + entry;
+ desc = priv->dma_tx + entry;
first = desc;
- tx_q->tx_skbuff[first_entry] = skb;
+ priv->tx_skbuff[first_entry] = skb;
enh_desc = priv->plat->enh_desc;
/* To program the descriptors according to the size of the frame */
@@ -2996,7 +2620,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
if (unlikely(is_jumbo) && likely(priv->synopsys_id <
DWMAC_CORE_4_00)) {
- entry = priv->hw->mode->jumbo_frm(tx_q, skb, csum_insertion);
+ entry = priv->hw->mode->jumbo_frm(priv, skb, csum_insertion);
if (unlikely(entry < 0))
goto dma_map_err;
}
@@ -3009,26 +2633,26 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
if (likely(priv->extend_desc))
- desc = (struct dma_desc *)(tx_q->dma_etx + entry);
+ desc = (struct dma_desc *)(priv->dma_etx + entry);
else
- desc = tx_q->dma_tx + entry;
+ desc = priv->dma_tx + entry;
des = skb_frag_dma_map(priv->device, frag, 0, len,
DMA_TO_DEVICE);
if (dma_mapping_error(priv->device, des))
goto dma_map_err; /* should reuse desc w/o issues */
- tx_q->tx_skbuff[entry] = NULL;
+ priv->tx_skbuff[entry] = NULL;
- tx_q->tx_skbuff_dma[entry].buf = des;
+ priv->tx_skbuff_dma[entry].buf = des;
if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00))
desc->des0 = cpu_to_le32(des);
else
desc->des2 = cpu_to_le32(des);
- tx_q->tx_skbuff_dma[entry].map_as_page = true;
- tx_q->tx_skbuff_dma[entry].len = len;
- tx_q->tx_skbuff_dma[entry].last_segment = last_segment;
+ priv->tx_skbuff_dma[entry].map_as_page = true;
+ priv->tx_skbuff_dma[entry].len = len;
+ priv->tx_skbuff_dma[entry].last_segment = last_segment;
/* Prepare the descriptor and set the own bit too */
priv->hw->desc->prepare_tx_desc(desc, 0, len, csum_insertion,
@@ -3037,20 +2661,20 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
- tx_q->cur_tx = entry;
+ priv->cur_tx = entry;
if (netif_msg_pktdata(priv)) {
void *tx_head;
netdev_dbg(priv->dev,
"%s: curr=%d dirty=%d f=%d, e=%d, first=%p, nfrags=%d",
- __func__, tx_q->cur_tx, tx_q->dirty_tx, first_entry,
+ __func__, priv->cur_tx, priv->dirty_tx, first_entry,
entry, first, nfrags);
if (priv->extend_desc)
- tx_head = (void *)tx_q->dma_etx;
+ tx_head = (void *)priv->dma_etx;
else
- tx_head = (void *)tx_q->dma_tx;
+ tx_head = (void *)priv->dma_tx;
priv->hw->desc->display_ring(tx_head, DMA_TX_SIZE, false);
@@ -3058,10 +2682,10 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
print_pkt(skb->data, skb->len);
}
- if (unlikely(stmmac_tx_avail(priv, queue) <= (MAX_SKB_FRAGS + 1))) {
+ if (unlikely(stmmac_tx_avail(priv) <= (MAX_SKB_FRAGS + 1))) {
netif_dbg(priv, hw, priv->dev, "%s: stop transmitted packets\n",
__func__);
- netif_tx_stop_queue(netdev_get_tx_queue(dev, queue));
+ netif_stop_queue(dev);
}
dev->stats.tx_bytes += skb->len;
@@ -3096,14 +2720,14 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
if (dma_mapping_error(priv->device, des))
goto dma_map_err;
- tx_q->tx_skbuff_dma[first_entry].buf = des;
+ priv->tx_skbuff_dma[first_entry].buf = des;
if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00))
first->des0 = cpu_to_le32(des);
else
first->des2 = cpu_to_le32(des);
- tx_q->tx_skbuff_dma[first_entry].len = nopaged_len;
- tx_q->tx_skbuff_dma[first_entry].last_segment = last_segment;
+ priv->tx_skbuff_dma[first_entry].len = nopaged_len;
+ priv->tx_skbuff_dma[first_entry].last_segment = last_segment;
if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
priv->hwts_tx_en)) {
@@ -3124,13 +2748,13 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
dma_wmb();
}
- netdev_tx_sent_queue(netdev_get_tx_queue(dev, queue), skb->len);
+ netdev_sent_queue(dev, skb->len);
if (priv->synopsys_id < DWMAC_CORE_4_00)
priv->hw->dma->enable_dma_transmission(priv->ioaddr);
else
- priv->hw->dma->set_tx_tail_ptr(priv->ioaddr, tx_q->tx_tail_addr,
- queue);
+ priv->hw->dma->set_tx_tail_ptr(priv->ioaddr, priv->tx_tail_addr,
+ STMMAC_CHAN0);
return NETDEV_TX_OK;
@@ -3158,9 +2782,9 @@ static void stmmac_rx_vlan(struct net_device *dev, struct sk_buff *skb)
}
-static inline int stmmac_rx_threshold_count(struct stmmac_rx_queue *rx_q)
+static inline int stmmac_rx_threshold_count(struct stmmac_priv *priv)
{
- if (rx_q->rx_zeroc_thresh < STMMAC_RX_THRESH)
+ if (priv->rx_zeroc_thresh < STMMAC_RX_THRESH)
return 0;
return 1;
@@ -3169,32 +2793,30 @@ static inline int stmmac_rx_threshold_count(struct stmmac_rx_queue *rx_q)
/**
* stmmac_rx_refill - refill used skb preallocated buffers
* @priv: driver private structure
- * @queue: RX queue index
* Description : this is to reallocate the skb for the reception process
* that is based on zero-copy.
*/
-static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
+static inline void stmmac_rx_refill(struct stmmac_priv *priv)
{
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
- int dirty = stmmac_rx_dirty(priv, queue);
- unsigned int entry = rx_q->dirty_rx;
int bfsize = priv->dma_buf_sz;
+ unsigned int entry = priv->dirty_rx;
+ int dirty = stmmac_rx_dirty(priv);
while (dirty-- > 0) {
struct dma_desc *p;
if (priv->extend_desc)
- p = (struct dma_desc *)(rx_q->dma_erx + entry);
+ p = (struct dma_desc *)(priv->dma_erx + entry);
else
- p = rx_q->dma_rx + entry;
+ p = priv->dma_rx + entry;
- if (!rx_q->rx_skbuff[entry]) {
+ if (likely(priv->rx_skbuff[entry] == NULL)) {
struct sk_buff *skb;
skb = netdev_alloc_skb_ip_align(priv->dev, bfsize);
if (unlikely(!skb)) {
/* so for a while no zero-copy! */
- rx_q->rx_zeroc_thresh = STMMAC_RX_THRESH;
+ priv->rx_zeroc_thresh = STMMAC_RX_THRESH;
if (unlikely(net_ratelimit()))
dev_err(priv->device,
"fail to alloc skb entry %d\n",
@@ -3202,28 +2824,28 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
break;
}
- rx_q->rx_skbuff[entry] = skb;
- rx_q->rx_skbuff_dma[entry] =
+ priv->rx_skbuff[entry] = skb;
+ priv->rx_skbuff_dma[entry] =
dma_map_single(priv->device, skb->data, bfsize,
DMA_FROM_DEVICE);
if (dma_mapping_error(priv->device,
- rx_q->rx_skbuff_dma[entry])) {
+ priv->rx_skbuff_dma[entry])) {
netdev_err(priv->dev, "Rx DMA map failed\n");
dev_kfree_skb(skb);
break;
}
if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00)) {
- p->des0 = cpu_to_le32(rx_q->rx_skbuff_dma[entry]);
+ p->des0 = cpu_to_le32(priv->rx_skbuff_dma[entry]);
p->des1 = 0;
} else {
- p->des2 = cpu_to_le32(rx_q->rx_skbuff_dma[entry]);
+ p->des2 = cpu_to_le32(priv->rx_skbuff_dma[entry]);
}
if (priv->hw->mode->refill_desc3)
- priv->hw->mode->refill_desc3(rx_q, p);
+ priv->hw->mode->refill_desc3(priv, p);
- if (rx_q->rx_zeroc_thresh > 0)
- rx_q->rx_zeroc_thresh--;
+ if (priv->rx_zeroc_thresh > 0)
+ priv->rx_zeroc_thresh--;
netif_dbg(priv, rx_status, priv->dev,
"refill entry #%d\n", entry);
@@ -3239,7 +2861,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
entry = STMMAC_GET_ENTRY(entry, DMA_RX_SIZE);
}
- rx_q->dirty_rx = entry;
+ priv->dirty_rx = entry;
}
/**
@@ -3249,22 +2871,21 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
* Description : this the function called by the napi poll method.
* It gets all the frames inside the ring.
*/
-static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
+static int stmmac_rx(struct stmmac_priv *priv, int limit)
{
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
- unsigned int entry = rx_q->cur_rx;
- int coe = priv->hw->rx_csum;
+ unsigned int entry = priv->cur_rx;
unsigned int next_entry;
unsigned int count = 0;
+ int coe = priv->hw->rx_csum;
if (netif_msg_rx_status(priv)) {
void *rx_head;
netdev_dbg(priv->dev, "%s: descriptor ring:\n", __func__);
if (priv->extend_desc)
- rx_head = (void *)rx_q->dma_erx;
+ rx_head = (void *)priv->dma_erx;
else
- rx_head = (void *)rx_q->dma_rx;
+ rx_head = (void *)priv->dma_rx;
priv->hw->desc->display_ring(rx_head, DMA_RX_SIZE, true);
}
@@ -3274,9 +2895,9 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
struct dma_desc *np;
if (priv->extend_desc)
- p = (struct dma_desc *)(rx_q->dma_erx + entry);
+ p = (struct dma_desc *)(priv->dma_erx + entry);
else
- p = rx_q->dma_rx + entry;
+ p = priv->dma_rx + entry;
/* read the status of the incoming frame */
status = priv->hw->desc->rx_status(&priv->dev->stats,
@@ -3287,20 +2908,20 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
count++;
- rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx, DMA_RX_SIZE);
- next_entry = rx_q->cur_rx;
+ priv->cur_rx = STMMAC_GET_ENTRY(priv->cur_rx, DMA_RX_SIZE);
+ next_entry = priv->cur_rx;
if (priv->extend_desc)
- np = (struct dma_desc *)(rx_q->dma_erx + next_entry);
+ np = (struct dma_desc *)(priv->dma_erx + next_entry);
else
- np = rx_q->dma_rx + next_entry;
+ np = priv->dma_rx + next_entry;
prefetch(np);
if ((priv->extend_desc) && (priv->hw->desc->rx_extended_status))
priv->hw->desc->rx_extended_status(&priv->dev->stats,
&priv->xstats,
- rx_q->dma_erx +
+ priv->dma_erx +
entry);
if (unlikely(status == discard_frame)) {
priv->dev->stats.rx_errors++;
@@ -3310,9 +2931,9 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
* them in stmmac_rx_refill() function so that
* device can reuse it.
*/
- rx_q->rx_skbuff[entry] = NULL;
+ priv->rx_skbuff[entry] = NULL;
dma_unmap_single(priv->device,
- rx_q->rx_skbuff_dma[entry],
+ priv->rx_skbuff_dma[entry],
priv->dma_buf_sz,
DMA_FROM_DEVICE);
}
@@ -3360,7 +2981,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
*/
if (unlikely(!priv->plat->has_gmac4 &&
((frame_len < priv->rx_copybreak) ||
- stmmac_rx_threshold_count(rx_q)))) {
+ stmmac_rx_threshold_count(priv)))) {
skb = netdev_alloc_skb_ip_align(priv->dev,
frame_len);
if (unlikely(!skb)) {
@@ -3372,21 +2993,21 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
}
dma_sync_single_for_cpu(priv->device,
- rx_q->rx_skbuff_dma
+ priv->rx_skbuff_dma
[entry], frame_len,
DMA_FROM_DEVICE);
skb_copy_to_linear_data(skb,
- rx_q->
+ priv->
rx_skbuff[entry]->data,
frame_len);
skb_put(skb, frame_len);
dma_sync_single_for_device(priv->device,
- rx_q->rx_skbuff_dma
+ priv->rx_skbuff_dma
[entry], frame_len,
DMA_FROM_DEVICE);
} else {
- skb = rx_q->rx_skbuff[entry];
+ skb = priv->rx_skbuff[entry];
if (unlikely(!skb)) {
netdev_err(priv->dev,
"%s: Inconsistent Rx chain\n",
@@ -3395,12 +3016,12 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
break;
}
prefetch(skb->data - NET_IP_ALIGN);
- rx_q->rx_skbuff[entry] = NULL;
- rx_q->rx_zeroc_thresh++;
+ priv->rx_skbuff[entry] = NULL;
+ priv->rx_zeroc_thresh++;
skb_put(skb, frame_len);
dma_unmap_single(priv->device,
- rx_q->rx_skbuff_dma[entry],
+ priv->rx_skbuff_dma[entry],
priv->dma_buf_sz,
DMA_FROM_DEVICE);
}
@@ -3422,7 +3043,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
else
skb->ip_summed = CHECKSUM_UNNECESSARY;
- napi_gro_receive(&rx_q->napi, skb);
+ napi_gro_receive(&priv->napi, skb);
priv->dev->stats.rx_packets++;
priv->dev->stats.rx_bytes += frame_len;
@@ -3430,7 +3051,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
entry = next_entry;
}
- stmmac_rx_refill(priv, queue);
+ stmmac_rx_refill(priv);
priv->xstats.rx_pkt_n += count;
@@ -3447,22 +3068,14 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
*/
static int stmmac_poll(struct napi_struct *napi, int budget)
{
- struct stmmac_rx_queue *rx_q =
- container_of(napi, struct stmmac_rx_queue, napi);
- struct stmmac_priv *priv = rx_q->priv_data;
- u32 tx_count = priv->dma_cap.number_tx_queues;
- u32 chan = rx_q->queue_index;
- u32 work_done = 0;
- u32 queue = 0;
+ struct stmmac_priv *priv = container_of(napi, struct stmmac_priv, napi);
+ int work_done = 0;
+ u32 chan = STMMAC_CHAN0;
priv->xstats.napi_poll++;
- /* check all the queues */
- for (queue = 0; queue < tx_count; queue++)
- stmmac_tx_clean(priv, queue);
-
- /* Process RX packets from this queue */
- work_done = stmmac_rx(priv, budget, rx_q->queue_index);
+ stmmac_tx_clean(priv);
+ work_done = stmmac_rx(priv, budget);
if (work_done < budget) {
napi_complete_done(napi, work_done);
stmmac_enable_dma_irq(priv, chan);
@@ -3481,12 +3094,10 @@ static int stmmac_poll(struct napi_struct *napi, int budget)
static void stmmac_tx_timeout(struct net_device *dev)
{
struct stmmac_priv *priv = netdev_priv(dev);
- u32 tx_count = priv->plat->tx_queues_to_use;
- u32 chan;
+ u32 chan = STMMAC_CHAN0;
/* Clear Tx resources and restart transmitting again */
- for (chan = 0; chan < tx_count; chan++)
- stmmac_tx_err(priv, chan);
+ stmmac_tx_err(priv, chan);
}
/**
@@ -3625,9 +3236,6 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
if (priv->synopsys_id >= DWMAC_CORE_4_00) {
for (queue = 0; queue < queues_count; queue++) {
- struct stmmac_rx_queue *rx_q =
- &priv->rx_queue[queue];
-
status |=
priv->hw->mac->host_mtl_irq_status(priv->hw,
queue);
@@ -3635,7 +3243,7 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
if (status & CORE_IRQ_MTL_RX_OVERFLOW &&
priv->hw->dma->set_rx_tail_ptr)
priv->hw->dma->set_rx_tail_ptr(priv->ioaddr,
- rx_q->rx_tail_addr,
+ priv->rx_tail_addr,
queue);
}
}
@@ -3735,40 +3343,17 @@ static int stmmac_sysfs_ring_read(struct seq_file *seq, void *v)
{
struct net_device *dev = seq->private;
struct stmmac_priv *priv = netdev_priv(dev);
- u32 rx_count = priv->plat->rx_queues_to_use;
- u32 tx_count = priv->plat->tx_queues_to_use;
- u32 queue;
-
- for (queue = 0; queue < rx_count; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- seq_printf(seq, "RX Queue %d:\n", queue);
-
- if (priv->extend_desc) {
- seq_printf(seq, "Extended descriptor ring:\n");
- sysfs_display_ring((void *)rx_q->dma_erx,
- 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);
- }
- }
-
- for (queue = 0; queue < tx_count; queue++) {
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
-
- seq_printf(seq, "TX Queue %d:\n", queue);
- if (priv->extend_desc) {
- seq_printf(seq, "Extended descriptor ring:\n");
- sysfs_display_ring((void *)tx_q->dma_etx,
- DMA_TX_SIZE, 1, seq);
- } else {
- seq_printf(seq, "Descriptor ring:\n");
- sysfs_display_ring((void *)tx_q->dma_tx,
- DMA_TX_SIZE, 0, seq);
- }
+ if (priv->extend_desc) {
+ seq_printf(seq, "Extended RX descriptor ring:\n");
+ sysfs_display_ring((void *)priv->dma_erx, DMA_RX_SIZE, 1, seq);
+ seq_printf(seq, "Extended TX descriptor ring:\n");
+ sysfs_display_ring((void *)priv->dma_etx, DMA_TX_SIZE, 1, seq);
+ } else {
+ seq_printf(seq, "RX descriptor ring:\n");
+ sysfs_display_ring((void *)priv->dma_rx, DMA_RX_SIZE, 0, seq);
+ seq_printf(seq, "TX descriptor ring:\n");
+ sysfs_display_ring((void *)priv->dma_tx, DMA_TX_SIZE, 0, seq);
}
return 0;
@@ -4057,14 +3642,11 @@ int stmmac_dvr_probe(struct device *device,
struct plat_stmmacenet_data *plat_dat,
struct stmmac_resources *res)
{
+ int ret = 0;
struct net_device *ndev = NULL;
struct stmmac_priv *priv;
- int ret = 0;
- u32 queue;
- ndev = alloc_etherdev_mqs(sizeof(struct stmmac_priv),
- MTL_MAX_TX_QUEUES,
- MTL_MAX_RX_QUEUES);
+ ndev = alloc_etherdev(sizeof(struct stmmac_priv));
if (!ndev)
return -ENOMEM;
@@ -4106,12 +3688,6 @@ int stmmac_dvr_probe(struct device *device,
if (ret)
goto error_hw_init;
- /* Configure real RX and TX queues */
- ndev->real_num_rx_queues = priv->plat->rx_queues_to_use;
- ndev->real_num_tx_queues = priv->plat->tx_queues_to_use;
-
- priv->dma_buf_sz = STMMAC_ALIGN(buf_sz);
-
ndev->netdev_ops = &stmmac_netdev_ops;
ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
@@ -4161,26 +3737,7 @@ int stmmac_dvr_probe(struct device *device,
"Enable RX Mitigation via HW Watchdog Timer\n");
}
- ret = alloc_dma_desc_resources(priv);
- if (ret < 0) {
- netdev_err(priv->dev, "%s: DMA descriptors allocation failed\n",
- __func__);
- goto init_dma_error;
- }
-
- ret = init_dma_desc_rings(priv->dev, GFP_KERNEL);
- if (ret < 0) {
- netdev_err(priv->dev, "%s: DMA descriptors initialization failed\n",
- __func__);
- goto init_dma_error;
- }
-
- for (queue = 0; queue < priv->plat->rx_queues_to_use; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- netif_napi_add(ndev, &rx_q->napi, stmmac_poll,
- (64 * priv->plat->rx_queues_to_use));
- }
+ netif_napi_add(ndev, &priv->napi, stmmac_poll, 64);
spin_lock_init(&priv->lock);
@@ -4225,13 +3782,7 @@ int stmmac_dvr_probe(struct device *device,
priv->hw->pcs != STMMAC_PCS_RTBI)
stmmac_mdio_unregister(ndev);
error_mdio_register:
- for (queue = 0; queue < priv->plat->rx_queues_to_use; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- netif_napi_del(&rx_q->napi);
- }
-init_dma_error:
- free_dma_desc_resources(priv);
+ netif_napi_del(&priv->napi);
error_hw_init:
free_netdev(ndev);
@@ -4293,9 +3844,9 @@ int stmmac_suspend(struct device *dev)
spin_lock_irqsave(&priv->lock, flags);
netif_device_detach(ndev);
- stmmac_stop_all_queues(priv);
+ netif_stop_queue(ndev);
- stmmac_disable_all_queues(priv);
+ napi_disable(&priv->napi);
/* Stop TX/RX DMA */
stmmac_stop_all_dma(priv);
@@ -4321,31 +3872,6 @@ int stmmac_suspend(struct device *dev)
EXPORT_SYMBOL_GPL(stmmac_suspend);
/**
- * stmmac_reset_queues_param - reset queue parameters
- * @dev: device pointer
- */
-static void stmmac_reset_queues_param(struct stmmac_priv *priv)
-{
- u32 rx_cnt = priv->plat->rx_queues_to_use;
- u32 tx_cnt = priv->plat->tx_queues_to_use;
- u32 queue;
-
- for (queue = 0; queue < rx_cnt; queue++) {
- struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
- rx_q->cur_rx = 0;
- rx_q->dirty_rx = 0;
- }
-
- for (queue = 0; queue < tx_cnt; queue++) {
- struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
-
- tx_q->cur_tx = 0;
- tx_q->dirty_tx = 0;
- }
-}
-
-/**
* stmmac_resume - resume callback
* @dev: device pointer
* Description: when resume this function is invoked to setup the DMA and CORE
@@ -4385,8 +3911,10 @@ int stmmac_resume(struct device *dev)
spin_lock_irqsave(&priv->lock, flags);
- stmmac_reset_queues_param(priv);
-
+ priv->cur_rx = 0;
+ priv->dirty_rx = 0;
+ priv->dirty_tx = 0;
+ priv->cur_tx = 0;
/* reset private mss value to force mss context settings at
* next tso xmit (only used for gmac4).
*/
@@ -4398,9 +3926,9 @@ int stmmac_resume(struct device *dev)
stmmac_init_tx_coalesce(priv);
stmmac_set_rx_mode(ndev);
- stmmac_enable_all_queues(priv);
+ napi_enable(&priv->napi);
- stmmac_start_all_queues(priv);
+ netif_start_queue(ndev);
spin_unlock_irqrestore(&priv->lock, flags);
--
2.10.2
Powered by blists - more mailing lists