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net: tsec: Move rxbd and txbd to struct tsec_private

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rxbd and txbd are declared static with 8 byte alignment requirement,
but they can be put into struct tsec_private as well and are natually
aligned to 8 byte.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Bin Meng 2016-01-11 22:41:20 -08:00 • committed by Joe Hershberger
parent 362b123f47
commit e677da9723
2 changed files with 36 additions and 37 deletions
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69
drivers/net/tsec.c
View file

@ -21,16 +21,6 @@
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
#define TX_BUF_CNT 2
#ifdef __GNUC__
static struct txbd8 __iomem txbd[TX_BUF_CNT] __aligned(8);
static struct rxbd8 __iomem rxbd[PKTBUFSRX] __aligned(8);
#else
#error "rtx must be 64-bit aligned"
#endif
static int tsec_send(struct eth_device *dev, void *packet, int length); static int tsec_send(struct eth_device *dev, void *packet, int length);
/* Default initializations for TSEC controllers. */ /* Default initializations for TSEC controllers. */
@ -277,7 +267,8 @@ void redundant_init(struct eth_device *dev)
tsec_send(dev, (void *)pkt, sizeof(pkt)); tsec_send(dev, (void *)pkt, sizeof(pkt));
/* Wait for buffer to be received */ /* Wait for buffer to be received */
for (t = 0; in_be16(&rxbd[priv->rx_idx].status) & RXBD_EMPTY; for (t = 0;
in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY;
t++) { t++) {
if (t >= 10 * TOUT_LOOP) { if (t >= 10 * TOUT_LOOP) {
printf("%s: tsec: rx error\n", dev->name); printf("%s: tsec: rx error\n", dev->name);
@ -288,11 +279,11 @@ void redundant_init(struct eth_device *dev)
if (!memcmp(pkt, net_rx_packets[priv->rx_idx], sizeof(pkt))) if (!memcmp(pkt, net_rx_packets[priv->rx_idx], sizeof(pkt)))
fail = 0; fail = 0;
out_be16(&rxbd[priv->rx_idx].length, 0); out_be16(&priv->rxbd[priv->rx_idx].length, 0);
status = RXBD_EMPTY; status = RXBD_EMPTY;
if ((priv->rx_idx + 1) == PKTBUFSRX) if ((priv->rx_idx + 1) == PKTBUFSRX)
status |= RXBD_WRAP; status |= RXBD_WRAP;
out_be16(&rxbd[priv->rx_idx].status, status); out_be16(&priv->rxbd[priv->rx_idx].status, status);
priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX; priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX;
if (in_be32(&regs->ievent) & IEVENT_BSY) { if (in_be32(&regs->ievent) & IEVENT_BSY) {
@ -335,26 +326,26 @@ static void startup_tsec(struct eth_device *dev)
#endif #endif
/* Point to the buffer descriptors */ /* Point to the buffer descriptors */
out_be32(&regs->tbase, (u32)&txbd[0]); out_be32(&regs->tbase, (u32)&priv->txbd[0]);
out_be32(&regs->rbase, (u32)&rxbd[0]); out_be32(&regs->rbase, (u32)&priv->rxbd[0]);
/* Initialize the Rx Buffer descriptors */ /* Initialize the Rx Buffer descriptors */
for (i = 0; i < PKTBUFSRX; i++) { for (i = 0; i < PKTBUFSRX; i++) {
out_be16(&rxbd[i].status, RXBD_EMPTY); out_be16(&priv->rxbd[i].status, RXBD_EMPTY);
out_be16(&rxbd[i].length, 0); out_be16(&priv->rxbd[i].length, 0);
out_be32(&rxbd[i].bufptr, (u32)net_rx_packets[i]); out_be32(&priv->rxbd[i].bufptr, (u32)net_rx_packets[i]);
} }
status = in_be16(&rxbd[PKTBUFSRX - 1].status); status = in_be16(&priv->rxbd[PKTBUFSRX - 1].status);
out_be16(&rxbd[PKTBUFSRX - 1].status, status | RXBD_WRAP); out_be16(&priv->rxbd[PKTBUFSRX - 1].status, status | RXBD_WRAP);
/* Initialize the TX Buffer Descriptors */ /* Initialize the TX Buffer Descriptors */
for (i = 0; i < TX_BUF_CNT; i++) { for (i = 0; i < TX_BUF_CNT; i++) {
out_be16(&txbd[i].status, 0); out_be16(&priv->txbd[i].status, 0);
out_be16(&txbd[i].length, 0); out_be16(&priv->txbd[i].length, 0);
out_be32(&txbd[i].bufptr, 0); out_be32(&priv->txbd[i].bufptr, 0);
} }
status = in_be16(&txbd[TX_BUF_CNT - 1].status); status = in_be16(&priv->txbd[TX_BUF_CNT - 1].status);
out_be16(&txbd[TX_BUF_CNT - 1].status, status | TXBD_WRAP); out_be16(&priv->txbd[TX_BUF_CNT - 1].status, status | TXBD_WRAP);
#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
svr = get_svr(); svr = get_svr();
@ -386,24 +377,28 @@ static int tsec_send(struct eth_device *dev, void *packet, int length)
int i; int i;
/* Find an empty buffer descriptor */ /* Find an empty buffer descriptor */
for (i = 0; in_be16(&txbd[priv->tx_idx].status) & TXBD_READY; i++) { for (i = 0;
in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY;
i++) {
if (i >= TOUT_LOOP) { if (i >= TOUT_LOOP) {
debug("%s: tsec: tx buffers full\n", dev->name); debug("%s: tsec: tx buffers full\n", dev->name);
return result; return result;
} }
} }
out_be32(&txbd[priv->tx_idx].bufptr, (u32)packet); out_be32(&priv->txbd[priv->tx_idx].bufptr, (u32)packet);
out_be16(&txbd[priv->tx_idx].length, length); out_be16(&priv->txbd[priv->tx_idx].length, length);
status = in_be16(&txbd[priv->tx_idx].status); status = in_be16(&priv->txbd[priv->tx_idx].status);
out_be16(&txbd[priv->tx_idx].status, status | out_be16(&priv->txbd[priv->tx_idx].status, status |
(TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT)); (TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT));
/* Tell the DMA to go */ /* Tell the DMA to go */
out_be32(&regs->tstat, TSTAT_CLEAR_THALT); out_be32(&regs->tstat, TSTAT_CLEAR_THALT);
/* Wait for buffer to be transmitted */ /* Wait for buffer to be transmitted */
for (i = 0; in_be16(&txbd[priv->tx_idx].status) & TXBD_READY; i++) { for (i = 0;
in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY;
i++) {
if (i >= TOUT_LOOP) { if (i >= TOUT_LOOP) {
debug("%s: tsec: tx error\n", dev->name); debug("%s: tsec: tx error\n", dev->name);
return result; return result;
@ -411,7 +406,7 @@ static int tsec_send(struct eth_device *dev, void *packet, int length)
} }
priv->tx_idx = (priv->tx_idx + 1) % TX_BUF_CNT; priv->tx_idx = (priv->tx_idx + 1) % TX_BUF_CNT;
result = in_be16(&txbd[priv->tx_idx].status) & TXBD_STATS; result = in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_STATS;
return result; return result;
} }
@ -421,9 +416,9 @@ static int tsec_recv(struct eth_device *dev)
struct tsec_private *priv = (struct tsec_private *)dev->priv; struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs; struct tsec __iomem *regs = priv->regs;
while (!(in_be16(&rxbd[priv->rx_idx].status) & RXBD_EMPTY)) { while (!(in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY)) {
int length = in_be16(&rxbd[priv->rx_idx].length); int length = in_be16(&priv->rxbd[priv->rx_idx].length);
uint16_t status = in_be16(&rxbd[priv->rx_idx].status); uint16_t status = in_be16(&priv->rxbd[priv->rx_idx].status);
uchar *packet = net_rx_packets[priv->rx_idx]; uchar *packet = net_rx_packets[priv->rx_idx];
/* Send the packet up if there were no errors */ /* Send the packet up if there were no errors */
@ -432,13 +427,13 @@ static int tsec_recv(struct eth_device *dev)
else else
printf("Got error %x\n", (status & RXBD_STATS)); printf("Got error %x\n", (status & RXBD_STATS));
out_be16(&rxbd[priv->rx_idx].length, 0); out_be16(&priv->rxbd[priv->rx_idx].length, 0);
status = RXBD_EMPTY; status = RXBD_EMPTY;
/* Set the wrap bit if this is the last element in the list */ /* Set the wrap bit if this is the last element in the list */
if ((priv->rx_idx + 1) == PKTBUFSRX) if ((priv->rx_idx + 1) == PKTBUFSRX)
status |= RXBD_WRAP; status |= RXBD_WRAP;
out_be16(&rxbd[priv->rx_idx].status, status); out_be16(&priv->rxbd[priv->rx_idx].status, status);
priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX; priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX;
} }

4
include/tsec.h
View file

@ -387,7 +387,11 @@ struct tsec {
#define TSEC_REDUCED (1 << 1) /* MAC-PHY interface uses RGMII */ #define TSEC_REDUCED (1 << 1) /* MAC-PHY interface uses RGMII */
#define TSEC_SGMII (1 << 2) /* MAC-PHY interface uses SGMII */ #define TSEC_SGMII (1 << 2) /* MAC-PHY interface uses SGMII */
#define TX_BUF_CNT 2
struct tsec_private { struct tsec_private {
struct txbd8 __iomem txbd[TX_BUF_CNT];
struct rxbd8 __iomem rxbd[PKTBUFSRX];
struct tsec __iomem *regs; struct tsec __iomem *regs;
struct tsec_mii_mng __iomem *phyregs_sgmii; struct tsec_mii_mng __iomem *phyregs_sgmii;
struct phy_device *phydev; struct phy_device *phydev;