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path: root/drivers/net/ethernet/i825xx/lib82596.c
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Diffstat (limited to 'drivers/net/ethernet/i825xx/lib82596.c')
-rw-r--r--drivers/net/ethernet/i825xx/lib82596.c148
1 files changed, 81 insertions, 67 deletions
diff --git a/drivers/net/ethernet/i825xx/lib82596.c b/drivers/net/ethernet/i825xx/lib82596.c
index b03757e169e4..ca2fb303fcc6 100644
--- a/drivers/net/ethernet/i825xx/lib82596.c
+++ b/drivers/net/ethernet/i825xx/lib82596.c
@@ -365,13 +365,44 @@ static int max_cmd_backlog = TX_RING_SIZE-1;
static void i596_poll_controller(struct net_device *dev);
#endif
+static inline dma_addr_t virt_to_dma(struct i596_private *lp, volatile void *v)
+{
+ return lp->dma_addr + ((unsigned long)v - (unsigned long)lp->dma);
+}
+
+#ifdef NONCOHERENT_DMA
+static inline void dma_sync_dev(struct net_device *ndev, volatile void *addr,
+ size_t len)
+{
+ dma_sync_single_for_device(ndev->dev.parent,
+ virt_to_dma(netdev_priv(ndev), addr), len,
+ DMA_BIDIRECTIONAL);
+}
+
+static inline void dma_sync_cpu(struct net_device *ndev, volatile void *addr,
+ size_t len)
+{
+ dma_sync_single_for_cpu(ndev->dev.parent,
+ virt_to_dma(netdev_priv(ndev), addr), len,
+ DMA_BIDIRECTIONAL);
+}
+#else
+static inline void dma_sync_dev(struct net_device *ndev, volatile void *addr,
+ size_t len)
+{
+}
+static inline void dma_sync_cpu(struct net_device *ndev, volatile void *addr,
+ size_t len)
+{
+}
+#endif /* NONCOHERENT_DMA */
static inline int wait_istat(struct net_device *dev, struct i596_dma *dma, int delcnt, char *str)
{
- DMA_INV(dev, &(dma->iscp), sizeof(struct i596_iscp));
+ dma_sync_cpu(dev, &(dma->iscp), sizeof(struct i596_iscp));
while (--delcnt && dma->iscp.stat) {
udelay(10);
- DMA_INV(dev, &(dma->iscp), sizeof(struct i596_iscp));
+ dma_sync_cpu(dev, &(dma->iscp), sizeof(struct i596_iscp));
}
if (!delcnt) {
printk(KERN_ERR "%s: %s, iscp.stat %04x, didn't clear\n",
@@ -384,10 +415,10 @@ static inline int wait_istat(struct net_device *dev, struct i596_dma *dma, int d
static inline int wait_cmd(struct net_device *dev, struct i596_dma *dma, int delcnt, char *str)
{
- DMA_INV(dev, &(dma->scb), sizeof(struct i596_scb));
+ dma_sync_cpu(dev, &(dma->scb), sizeof(struct i596_scb));
while (--delcnt && dma->scb.command) {
udelay(10);
- DMA_INV(dev, &(dma->scb), sizeof(struct i596_scb));
+ dma_sync_cpu(dev, &(dma->scb), sizeof(struct i596_scb));
}
if (!delcnt) {
printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n",
@@ -451,12 +482,9 @@ static void i596_display_data(struct net_device *dev)
SWAP32(rbd->b_data), SWAP16(rbd->size));
rbd = rbd->v_next;
} while (rbd != lp->rbd_head);
- DMA_INV(dev, dma, sizeof(struct i596_dma));
+ dma_sync_cpu(dev, dma, sizeof(struct i596_dma));
}
-
-#define virt_to_dma(lp, v) ((lp)->dma_addr + (dma_addr_t)((unsigned long)(v)-(unsigned long)((lp)->dma)))
-
static inline int init_rx_bufs(struct net_device *dev)
{
struct i596_private *lp = netdev_priv(dev);
@@ -508,7 +536,7 @@ static inline int init_rx_bufs(struct net_device *dev)
rfd->b_next = SWAP32(virt_to_dma(lp, dma->rfds));
rfd->cmd = SWAP16(CMD_EOL|CMD_FLEX);
- DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
+ dma_sync_dev(dev, dma, sizeof(struct i596_dma));
return 0;
}
@@ -547,7 +575,7 @@ static void rebuild_rx_bufs(struct net_device *dev)
lp->rbd_head = dma->rbds;
dma->rfds[0].rbd = SWAP32(virt_to_dma(lp, dma->rbds));
- DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
+ dma_sync_dev(dev, dma, sizeof(struct i596_dma));
}
@@ -575,9 +603,9 @@ static int init_i596_mem(struct net_device *dev)
DEB(DEB_INIT, printk(KERN_DEBUG "%s: starting i82596.\n", dev->name));
- DMA_WBACK(dev, &(dma->scp), sizeof(struct i596_scp));
- DMA_WBACK(dev, &(dma->iscp), sizeof(struct i596_iscp));
- DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
+ dma_sync_dev(dev, &(dma->scp), sizeof(struct i596_scp));
+ dma_sync_dev(dev, &(dma->iscp), sizeof(struct i596_iscp));
+ dma_sync_dev(dev, &(dma->scb), sizeof(struct i596_scb));
mpu_port(dev, PORT_ALTSCP, virt_to_dma(lp, &dma->scp));
ca(dev);
@@ -596,24 +624,24 @@ static int init_i596_mem(struct net_device *dev)
rebuild_rx_bufs(dev);
dma->scb.command = 0;
- DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
+ dma_sync_dev(dev, &(dma->scb), sizeof(struct i596_scb));
DEB(DEB_INIT, printk(KERN_DEBUG
"%s: queuing CmdConfigure\n", dev->name));
memcpy(dma->cf_cmd.i596_config, init_setup, 14);
dma->cf_cmd.cmd.command = SWAP16(CmdConfigure);
- DMA_WBACK(dev, &(dma->cf_cmd), sizeof(struct cf_cmd));
+ dma_sync_dev(dev, &(dma->cf_cmd), sizeof(struct cf_cmd));
i596_add_cmd(dev, &dma->cf_cmd.cmd);
DEB(DEB_INIT, printk(KERN_DEBUG "%s: queuing CmdSASetup\n", dev->name));
memcpy(dma->sa_cmd.eth_addr, dev->dev_addr, ETH_ALEN);
dma->sa_cmd.cmd.command = SWAP16(CmdSASetup);
- DMA_WBACK(dev, &(dma->sa_cmd), sizeof(struct sa_cmd));
+ dma_sync_dev(dev, &(dma->sa_cmd), sizeof(struct sa_cmd));
i596_add_cmd(dev, &dma->sa_cmd.cmd);
DEB(DEB_INIT, printk(KERN_DEBUG "%s: queuing CmdTDR\n", dev->name));
dma->tdr_cmd.cmd.command = SWAP16(CmdTDR);
- DMA_WBACK(dev, &(dma->tdr_cmd), sizeof(struct tdr_cmd));
+ dma_sync_dev(dev, &(dma->tdr_cmd), sizeof(struct tdr_cmd));
i596_add_cmd(dev, &dma->tdr_cmd.cmd);
spin_lock_irqsave (&lp->lock, flags);
@@ -625,7 +653,7 @@ static int init_i596_mem(struct net_device *dev)
DEB(DEB_INIT, printk(KERN_DEBUG "%s: Issuing RX_START\n", dev->name));
dma->scb.command = SWAP16(RX_START);
dma->scb.rfd = SWAP32(virt_to_dma(lp, dma->rfds));
- DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
+ dma_sync_dev(dev, &(dma->scb), sizeof(struct i596_scb));
ca(dev);
@@ -659,13 +687,13 @@ static inline int i596_rx(struct net_device *dev)
rfd = lp->rfd_head; /* Ref next frame to check */
- DMA_INV(dev, rfd, sizeof(struct i596_rfd));
+ dma_sync_cpu(dev, rfd, sizeof(struct i596_rfd));
while (rfd->stat & SWAP16(STAT_C)) { /* Loop while complete frames */
if (rfd->rbd == I596_NULL)
rbd = NULL;
else if (rfd->rbd == lp->rbd_head->b_addr) {
rbd = lp->rbd_head;
- DMA_INV(dev, rbd, sizeof(struct i596_rbd));
+ dma_sync_cpu(dev, rbd, sizeof(struct i596_rbd));
} else {
printk(KERN_ERR "%s: rbd chain broken!\n", dev->name);
/* XXX Now what? */
@@ -713,7 +741,7 @@ static inline int i596_rx(struct net_device *dev)
DMA_FROM_DEVICE);
rbd->v_data = newskb->data;
rbd->b_data = SWAP32(dma_addr);
- DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
+ dma_sync_dev(dev, rbd, sizeof(struct i596_rbd));
} else {
skb = netdev_alloc_skb_ip_align(dev, pkt_len);
}
@@ -765,7 +793,7 @@ memory_squeeze:
if (rbd != NULL && (rbd->count & SWAP16(0x4000))) {
rbd->count = 0;
lp->rbd_head = rbd->v_next;
- DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
+ dma_sync_dev(dev, rbd, sizeof(struct i596_rbd));
}
/* Tidy the frame descriptor, marking it as end of list */
@@ -779,14 +807,14 @@ memory_squeeze:
lp->dma->scb.rfd = rfd->b_next;
lp->rfd_head = rfd->v_next;
- DMA_WBACK_INV(dev, rfd, sizeof(struct i596_rfd));
+ dma_sync_dev(dev, rfd, sizeof(struct i596_rfd));
/* Remove end-of-list from old end descriptor */
rfd->v_prev->cmd = SWAP16(CMD_FLEX);
- DMA_WBACK_INV(dev, rfd->v_prev, sizeof(struct i596_rfd));
+ dma_sync_dev(dev, rfd->v_prev, sizeof(struct i596_rfd));
rfd = lp->rfd_head;
- DMA_INV(dev, rfd, sizeof(struct i596_rfd));
+ dma_sync_cpu(dev, rfd, sizeof(struct i596_rfd));
}
DEB(DEB_RXFRAME, printk(KERN_DEBUG "frames %d\n", frames));
@@ -827,12 +855,12 @@ static inline void i596_cleanup_cmd(struct net_device *dev, struct i596_private
ptr->v_next = NULL;
ptr->b_next = I596_NULL;
}
- DMA_WBACK_INV(dev, ptr, sizeof(struct i596_cmd));
+ dma_sync_dev(dev, ptr, sizeof(struct i596_cmd));
}
wait_cmd(dev, lp->dma, 100, "i596_cleanup_cmd timed out");
lp->dma->scb.cmd = I596_NULL;
- DMA_WBACK(dev, &(lp->dma->scb), sizeof(struct i596_scb));
+ dma_sync_dev(dev, &(lp->dma->scb), sizeof(struct i596_scb));
}
@@ -850,7 +878,7 @@ static inline void i596_reset(struct net_device *dev, struct i596_private *lp)
/* FIXME: this command might cause an lpmc */
lp->dma->scb.command = SWAP16(CUC_ABORT | RX_ABORT);
- DMA_WBACK(dev, &(lp->dma->scb), sizeof(struct i596_scb));
+ dma_sync_dev(dev, &(lp->dma->scb), sizeof(struct i596_scb));
ca(dev);
/* wait for shutdown */
@@ -878,20 +906,20 @@ static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd)
cmd->command |= SWAP16(CMD_EOL | CMD_INTR);
cmd->v_next = NULL;
cmd->b_next = I596_NULL;
- DMA_WBACK(dev, cmd, sizeof(struct i596_cmd));
+ dma_sync_dev(dev, cmd, sizeof(struct i596_cmd));
spin_lock_irqsave (&lp->lock, flags);
if (lp->cmd_head != NULL) {
lp->cmd_tail->v_next = cmd;
lp->cmd_tail->b_next = SWAP32(virt_to_dma(lp, &cmd->status));
- DMA_WBACK(dev, lp->cmd_tail, sizeof(struct i596_cmd));
+ dma_sync_dev(dev, lp->cmd_tail, sizeof(struct i596_cmd));
} else {
lp->cmd_head = cmd;
wait_cmd(dev, dma, 100, "i596_add_cmd timed out");
dma->scb.cmd = SWAP32(virt_to_dma(lp, &cmd->status));
dma->scb.command = SWAP16(CUC_START);
- DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
+ dma_sync_dev(dev, &(dma->scb), sizeof(struct i596_scb));
ca(dev);
}
lp->cmd_tail = cmd;
@@ -956,7 +984,7 @@ static void i596_tx_timeout (struct net_device *dev, unsigned int txqueue)
/* Issue a channel attention signal */
DEB(DEB_ERRORS, printk(KERN_DEBUG "Kicking board.\n"));
lp->dma->scb.command = SWAP16(CUC_START | RX_START);
- DMA_WBACK_INV(dev, &(lp->dma->scb), sizeof(struct i596_scb));
+ dma_sync_dev(dev, &(lp->dma->scb), sizeof(struct i596_scb));
ca (dev);
lp->last_restart = dev->stats.tx_packets;
}
@@ -1014,8 +1042,8 @@ static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
tbd->data = SWAP32(tx_cmd->dma_addr);
DEB(DEB_TXADDR, print_eth(skb->data, "tx-queued"));
- DMA_WBACK_INV(dev, tx_cmd, sizeof(struct tx_cmd));
- DMA_WBACK_INV(dev, tbd, sizeof(struct i596_tbd));
+ dma_sync_dev(dev, tx_cmd, sizeof(struct tx_cmd));
+ dma_sync_dev(dev, tbd, sizeof(struct i596_tbd));
i596_add_cmd(dev, &tx_cmd->cmd);
dev->stats.tx_packets++;
@@ -1047,9 +1075,8 @@ static const struct net_device_ops i596_netdev_ops = {
static int i82596_probe(struct net_device *dev)
{
- int i;
struct i596_private *lp = netdev_priv(dev);
- struct i596_dma *dma;
+ int ret;
/* This lot is ensure things have been cache line aligned. */
BUILD_BUG_ON(sizeof(struct i596_rfd) != 32);
@@ -1063,41 +1090,28 @@ static int i82596_probe(struct net_device *dev)
if (!dev->base_addr || !dev->irq)
return -ENODEV;
- dma = dma_alloc_attrs(dev->dev.parent, sizeof(struct i596_dma),
- &lp->dma_addr, GFP_KERNEL,
- LIB82596_DMA_ATTR);
- if (!dma) {
- printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__);
- return -ENOMEM;
- }
-
dev->netdev_ops = &i596_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
- memset(dma, 0, sizeof(struct i596_dma));
- lp->dma = dma;
-
- dma->scb.command = 0;
- dma->scb.cmd = I596_NULL;
- dma->scb.rfd = I596_NULL;
+ memset(lp->dma, 0, sizeof(struct i596_dma));
+ lp->dma->scb.command = 0;
+ lp->dma->scb.cmd = I596_NULL;
+ lp->dma->scb.rfd = I596_NULL;
spin_lock_init(&lp->lock);
- DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
+ dma_sync_dev(dev, lp->dma, sizeof(struct i596_dma));
- i = register_netdev(dev);
- if (i) {
- dma_free_attrs(dev->dev.parent, sizeof(struct i596_dma),
- dma, lp->dma_addr, LIB82596_DMA_ATTR);
- return i;
- }
+ ret = register_netdev(dev);
+ if (ret)
+ return ret;
DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx, %pM IRQ %d.\n",
dev->name, dev->base_addr, dev->dev_addr,
dev->irq));
DEB(DEB_INIT, printk(KERN_INFO
"%s: dma at 0x%p (%d bytes), lp->scb at 0x%p\n",
- dev->name, dma, (int)sizeof(struct i596_dma),
- &dma->scb));
+ dev->name, lp->dma, (int)sizeof(struct i596_dma),
+ &lp->dma->scb));
return 0;
}
@@ -1155,7 +1169,7 @@ static irqreturn_t i596_interrupt(int irq, void *dev_id)
dev->name, status & 0x0700));
while (lp->cmd_head != NULL) {
- DMA_INV(dev, lp->cmd_head, sizeof(struct i596_cmd));
+ dma_sync_cpu(dev, lp->cmd_head, sizeof(struct i596_cmd));
if (!(lp->cmd_head->status & SWAP16(STAT_C)))
break;
@@ -1237,7 +1251,7 @@ static irqreturn_t i596_interrupt(int irq, void *dev_id)
}
ptr->v_next = NULL;
ptr->b_next = I596_NULL;
- DMA_WBACK(dev, ptr, sizeof(struct i596_cmd));
+ dma_sync_dev(dev, ptr, sizeof(struct i596_cmd));
lp->last_cmd = jiffies;
}
@@ -1251,13 +1265,13 @@ static irqreturn_t i596_interrupt(int irq, void *dev_id)
ptr->command &= SWAP16(0x1fff);
ptr = ptr->v_next;
- DMA_WBACK_INV(dev, prev, sizeof(struct i596_cmd));
+ dma_sync_dev(dev, prev, sizeof(struct i596_cmd));
}
if (lp->cmd_head != NULL)
ack_cmd |= CUC_START;
dma->scb.cmd = SWAP32(virt_to_dma(lp, &lp->cmd_head->status));
- DMA_WBACK_INV(dev, &dma->scb, sizeof(struct i596_scb));
+ dma_sync_dev(dev, &dma->scb, sizeof(struct i596_scb));
}
if ((status & 0x1000) || (status & 0x4000)) {
if ((status & 0x4000))
@@ -1282,7 +1296,7 @@ static irqreturn_t i596_interrupt(int irq, void *dev_id)
}
wait_cmd(dev, dma, 100, "i596 interrupt, timeout");
dma->scb.command = SWAP16(ack_cmd);
- DMA_WBACK(dev, &dma->scb, sizeof(struct i596_scb));
+ dma_sync_dev(dev, &dma->scb, sizeof(struct i596_scb));
/* DANGER: I suspect that some kind of interrupt
acknowledgement aside from acking the 82596 might be needed
@@ -1313,7 +1327,7 @@ static int i596_close(struct net_device *dev)
wait_cmd(dev, lp->dma, 100, "close1 timed out");
lp->dma->scb.command = SWAP16(CUC_ABORT | RX_ABORT);
- DMA_WBACK(dev, &lp->dma->scb, sizeof(struct i596_scb));
+ dma_sync_dev(dev, &lp->dma->scb, sizeof(struct i596_scb));
ca(dev);
@@ -1372,7 +1386,7 @@ static void set_multicast_list(struct net_device *dev)
dev->name);
else {
dma->cf_cmd.cmd.command = SWAP16(CmdConfigure);
- DMA_WBACK_INV(dev, &dma->cf_cmd, sizeof(struct cf_cmd));
+ dma_sync_dev(dev, &dma->cf_cmd, sizeof(struct cf_cmd));
i596_add_cmd(dev, &dma->cf_cmd.cmd);
}
}
@@ -1404,7 +1418,7 @@ static void set_multicast_list(struct net_device *dev)
dev->name, cp));
cp += ETH_ALEN;
}
- DMA_WBACK_INV(dev, &dma->mc_cmd, sizeof(struct mc_cmd));
+ dma_sync_dev(dev, &dma->mc_cmd, sizeof(struct mc_cmd));
i596_add_cmd(dev, &cmd->cmd);
}
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-01 23:16:00 +0300