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Commit c6c3ba45 authored by Peng Li's avatar Peng Li Committed by David S. Miller
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net: z85230: fix the comments style issue 

Networking block comments don't use an empty /* line,
use /* Comment...

Block comments use * on subsequent lines.
Block comments use a trailing */ on a separate line.

This patch fixes the comments style issues.
Signed-off-by: default avatarPeng Li <lipeng321@huawei.com>
Signed-off-by: default avatarGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b55932bc
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Showing with 83 additions and 131 deletions
drivers/net/wan/z85230.c
View file @ c6c3ba45
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* (c) Copyright 1998 Alan Cox <alan@lxorguk.ukuu.org.uk>
/* (c) Copyright 1998 Alan Cox <alan@lxorguk.ukuu.org.uk>
* (c) Copyright 2000, 2001 Red Hat Inc
*
* Development of this driver was funded by Equiinet Ltd
......@@ -183,8 +181,7 @@ static inline void write_zsdata(struct z8530_channel *c, u8 val)
z8530_write_port(c->dataio, val);
}
/*
* Register loading parameters for a dead port
/* Register loading parameters for a dead port
*/
u8 z8530_dead_port[]=
......@@ -193,12 +190,10 @@ u8 z8530_dead_port[]=
};
EXPORT_SYMBOL(z8530_dead_port);
/*
* Register loading parameters for currently supported circuit types
/* Register loading parameters for currently supported circuit types
*/
/*
* Data clocked by telco end. This is the correct data for the UK
/* Data clocked by telco end. This is the correct data for the UK
* "kilostream" service, and most other similar services.
*/
......@@ -222,8 +217,7 @@ u8 z8530_hdlc_kilostream[]=
};
EXPORT_SYMBOL(z8530_hdlc_kilostream);
/*
* As above but for enhanced chips.
/* As above but for enhanced chips.
*/
u8 z8530_hdlc_kilostream_85230[]=
......@@ -331,8 +325,7 @@ static void z8530_rx(struct z8530_channel *c)
ch=read_zsdata(c);
stat=read_zsreg(c, R1);
/*
* Overrun ?
/* Overrun ?
*/
if(c->count < c->max)
{
......@@ -342,8 +335,7 @@ static void z8530_rx(struct z8530_channel *c)
if(stat&END_FR)
{
/*
* Error ?
/* Error ?
*/
if(stat&(Rx_OVR|CRC_ERR))
{
......@@ -365,8 +357,7 @@ static void z8530_rx(struct z8530_channel *c)
}
else
{
/*
* Drop the lock for RX processing, or
/* Drop the lock for RX processing, or
* there are deadlocks
*/
z8530_rx_done(c);
......@@ -374,8 +365,7 @@ static void z8530_rx(struct z8530_channel *c)
}
}
}
/*
* Clear irq
/* Clear irq
*/
write_zsctrl(c, ERR_RES);
write_zsctrl(c, RES_H_IUS);
......@@ -398,8 +388,7 @@ static void z8530_tx(struct z8530_channel *c)
if(!(read_zsreg(c, R0)&4))
return;
c->txcount--;
/*
* Shovel out the byte
/* Shovel out the byte
*/
write_zsreg(c, R8, *c->tx_ptr++);
write_zsctrl(c, RES_H_IUS);
......@@ -411,8 +400,7 @@ static void z8530_tx(struct z8530_channel *c)
}
}
/*
* End of frame TX - fire another one
/* End of frame TX - fire another one
*/
write_zsctrl(c, RES_Tx_P);
......@@ -607,8 +595,7 @@ static struct z8530_irqhandler z8530_txdma_sync = {
static void z8530_rx_clear(struct z8530_channel *c)
{
/*
* Data and status bytes
/* Data and status bytes
*/
u8 stat;
......@@ -617,8 +604,7 @@ static void z8530_rx_clear(struct z8530_channel *c)
if(stat&END_FR)
write_zsctrl(c, RES_Rx_CRC);
/*
* Clear irq
/* Clear irq
*/
write_zsctrl(c, ERR_RES);
write_zsctrl(c, RES_H_IUS);
......@@ -704,11 +690,13 @@ irqreturn_t z8530_interrupt(int irq, void *dev_id)
if(!(intr & (CHARxIP|CHATxIP|CHAEXT|CHBRxIP|CHBTxIP|CHBEXT)))
break;
/* This holds the IRQ status. On the 8530 you must read it from chan
A even though it applies to the whole chip */
/* This holds the IRQ status. On the 8530 you must read it
* from chan A even though it applies to the whole chip
*/
/* Now walk the chip and see what it is wanting - it may be
an IRQ for someone else remember */
* an IRQ for someone else remember
*/
irqs=dev->chanA.irqs;
......@@ -835,14 +823,13 @@ int z8530_sync_dma_open(struct net_device *dev, struct z8530_channel *c)
c->count = 0;
c->skb = NULL;
c->skb2 = NULL;
/*
* Load the DMA interfaces up
/* Load the DMA interfaces up
*/
c->rxdma_on = 0;
c->txdma_on = 0;
/*
* Allocate the DMA flip buffers. Limit by page size.
/* Allocate the DMA flip buffers. Limit by page size.
* Everyone runs 1500 mtu or less on wan links so this
* should be fine.
*/
......@@ -869,14 +856,12 @@ int z8530_sync_dma_open(struct net_device *dev, struct z8530_channel *c)
c->dma_num=0;
c->dma_ready=1;
/*
* Enable DMA control mode
/* Enable DMA control mode
*/
spin_lock_irqsave(c->lock, cflags);
/*
* TX DMA via DIR/REQ
/* TX DMA via DIR/REQ
*/
c->regs[R14]|= DTRREQ;
......@@ -884,9 +869,8 @@ int z8530_sync_dma_open(struct net_device *dev, struct z8530_channel *c)
c->regs[R1]&= ~TxINT_ENAB;
write_zsreg(c, R1, c->regs[R1]);
/*
* RX DMA via W/Req
/* RX DMA via W/Req
*/
c->regs[R1]|= WT_FN_RDYFN;
......@@ -896,13 +880,11 @@ int z8530_sync_dma_open(struct net_device *dev, struct z8530_channel *c)
write_zsreg(c, R1, c->regs[R1]);
c->regs[R1]|= WT_RDY_ENAB;
write_zsreg(c, R1, c->regs[R1]);
/*
* DMA interrupts
/* DMA interrupts
*/
/*
* Set up the DMA configuration
/* Set up the DMA configuration
*/
dflags=claim_dma_lock();
......@@ -920,9 +902,8 @@ int z8530_sync_dma_open(struct net_device *dev, struct z8530_channel *c)
disable_dma(c->txdma);
release_dma_lock(dflags);
/*
* Select the DMA interrupt handlers
/* Select the DMA interrupt handlers
*/
c->rxdma_on = 1;
......@@ -956,9 +937,8 @@ int z8530_sync_dma_close(struct net_device *dev, struct z8530_channel *c)
c->irqs = &z8530_nop;
c->max = 0;
c->sync = 0;
/*
* Disable the PC DMA channels
/* Disable the PC DMA channels
*/
flags=claim_dma_lock();
......@@ -976,8 +956,7 @@ int z8530_sync_dma_close(struct net_device *dev, struct z8530_channel *c)
spin_lock_irqsave(c->lock, flags);
/*
* Disable DMA control mode
/* Disable DMA control mode
*/
c->regs[R1]&= ~WT_RDY_ENAB;
......@@ -1028,9 +1007,8 @@ int z8530_sync_txdma_open(struct net_device *dev, struct z8530_channel *c)
c->count = 0;
c->skb = NULL;
c->skb2 = NULL;
/*
* Allocate the DMA flip buffers. Limit by page size.
/* Allocate the DMA flip buffers. Limit by page size.
* Everyone runs 1500 mtu or less on wan links so this
* should be fine.
*/
......@@ -1046,15 +1024,13 @@ int z8530_sync_txdma_open(struct net_device *dev, struct z8530_channel *c)
spin_lock_irqsave(c->lock, cflags);
/*
* Load the PIO receive ring
/* Load the PIO receive ring
*/
z8530_rx_done(c);
z8530_rx_done(c);
/*
* Load the DMA interfaces up
/* Load the DMA interfaces up
*/
c->rxdma_on = 0;
......@@ -1065,21 +1041,18 @@ int z8530_sync_txdma_open(struct net_device *dev, struct z8530_channel *c)
c->dma_ready=1;
c->dma_tx = 1;
/*
* Enable DMA control mode
/* Enable DMA control mode
*/
/*
* TX DMA via DIR/REQ
/* TX DMA via DIR/REQ
*/
c->regs[R14]|= DTRREQ;
write_zsreg(c, R14, c->regs[R14]);
c->regs[R1]&= ~TxINT_ENAB;
write_zsreg(c, R1, c->regs[R1]);
/*
* Set up the DMA configuration
/* Set up the DMA configuration
*/
dflags = claim_dma_lock();
......@@ -1090,9 +1063,8 @@ int z8530_sync_txdma_open(struct net_device *dev, struct z8530_channel *c)
disable_dma(c->txdma);
release_dma_lock(dflags);
/*
* Select the DMA interrupt handlers
/* Select the DMA interrupt handlers
*/
c->rxdma_on = 0;
......@@ -1127,9 +1099,8 @@ int z8530_sync_txdma_close(struct net_device *dev, struct z8530_channel *c)
c->irqs = &z8530_nop;
c->max = 0;
c->sync = 0;
/*
* Disable the PC DMA channels
/* Disable the PC DMA channels
*/
dflags = claim_dma_lock();
......@@ -1141,8 +1112,7 @@ int z8530_sync_txdma_close(struct net_device *dev, struct z8530_channel *c)
release_dma_lock(dflags);
/*
* Disable DMA control mode
/* Disable DMA control mode
*/
c->regs[R1]&= ~WT_RDY_ENAB;
......@@ -1167,8 +1137,7 @@ int z8530_sync_txdma_close(struct net_device *dev, struct z8530_channel *c)
}
EXPORT_SYMBOL(z8530_sync_txdma_close);
/*
* Name strings for Z8530 chips. SGI claim to have a 130, Zilog deny
/* Name strings for Z8530 chips. SGI claim to have a 130, Zilog deny
* it exists...
*/
......@@ -1200,14 +1169,14 @@ void z8530_describe(struct z8530_dev *dev, char *mapping, unsigned long io)
}
EXPORT_SYMBOL(z8530_describe);
/*
* Locked operation part of the z8530 init code
/* Locked operation part of the z8530 init code
*/
static inline int do_z8530_init(struct z8530_dev *dev)
{
/* NOP the interrupt handlers first - we might get a
floating IRQ transition when we reset the chip */
* floating IRQ transition when we reset the chip
*/
dev->chanA.irqs=&z8530_nop;
dev->chanB.irqs=&z8530_nop;
dev->chanA.dcdcheck=DCD;
......@@ -1225,15 +1194,13 @@ static inline int do_z8530_init(struct z8530_dev *dev)
return -ENODEV;
dev->type=Z8530;
/*
* See the application note.
/* See the application note.
*/
write_zsreg(&dev->chanA, R15, 0x01);
/*
* If we can set the low bit of R15 then
/* If we can set the low bit of R15 then
* the chip is enhanced.
*/
......@@ -1247,17 +1214,15 @@ static inline int do_z8530_init(struct z8530_dev *dev)
else
dev->type = Z85C30; /* Z85C30, 1 byte FIFO */
}
/*
* The code assumes R7' and friends are
/* The code assumes R7' and friends are
* off. Use write_zsext() for these and keep
* this bit clear.
*/
write_zsreg(&dev->chanA, R15, 0);
/*
* At this point it looks like the chip is behaving
/* At this point it looks like the chip is behaving
*/
memcpy(dev->chanA.regs, reg_init, 16);
......@@ -1404,8 +1369,7 @@ static void z8530_tx_begin(struct z8530_channel *c)
{
flags=claim_dma_lock();
disable_dma(c->txdma);
/*
* Check if we crapped out.
/* Check if we crapped out.
*/
if (get_dma_residue(c->txdma))
{
......@@ -1422,8 +1386,7 @@ static void z8530_tx_begin(struct z8530_channel *c)
if(c->dma_tx)
{
/*
* FIXME. DMA is broken for the original 8530,
/* FIXME. DMA is broken for the original 8530,
* on the older parts we need to set a flag and
* wait for a further TX interrupt to fire this
* stage off
......@@ -1432,8 +1395,7 @@ static void z8530_tx_begin(struct z8530_channel *c)
flags=claim_dma_lock();
disable_dma(c->txdma);
/*
* These two are needed by the 8530/85C30
/* These two are needed by the 8530/85C30
* and must be issued when idling.
*/
......@@ -1464,8 +1426,7 @@ static void z8530_tx_begin(struct z8530_channel *c)
}
}
}
/*
* Since we emptied tx_skb we can ask for more
/* Since we emptied tx_skb we can ask for more
*/
netif_wake_queue(c->netdevice);
}
......@@ -1529,22 +1490,19 @@ static void z8530_rx_done(struct z8530_channel *c)
{
struct sk_buff *skb;
int ct;
/*
* Is our receive engine in DMA mode
/* Is our receive engine in DMA mode
*/
if(c->rxdma_on)
{
/*
* Save the ready state and the buffer currently
/* Save the ready state and the buffer currently
* being used as the DMA target
*/
int ready=c->dma_ready;
unsigned char *rxb=c->rx_buf[c->dma_num];
unsigned long flags;
/*
* Complete this DMA. Necessary to find the length
/* Complete this DMA. Necessary to find the length
*/
flags=claim_dma_lock();
......@@ -1555,9 +1513,8 @@ static void z8530_rx_done(struct z8530_channel *c)
if(ct<0)
ct=2; /* Shit happens.. */
c->dma_ready=0;
/*
* Normal case: the other slot is free, start the next DMA
/* Normal case: the other slot is free, start the next DMA
* into it immediately.
*/
......@@ -1569,19 +1526,20 @@ static void z8530_rx_done(struct z8530_channel *c)
set_dma_count(c->rxdma, c->mtu);
c->rxdma_on = 1;
enable_dma(c->rxdma);
/* Stop any frames that we missed the head of
from passing */
/* Stop any frames that we missed the head of
* from passing
*/
write_zsreg(c, R0, RES_Rx_CRC);
}
else
/* Can't occur as we dont reenable the DMA irq until
after the flip is done */
* after the flip is done
*/
netdev_warn(c->netdevice, "DMA flip overrun!\n");
release_dma_lock(flags);
/*
* Shove the old buffer into an sk_buff. We can't DMA
/* Shove the old buffer into an sk_buff. We can't DMA
* directly into one on a PC - it might be above the 16Mb
* boundary. Optimisation - we could check to see if we
* can avoid the copy. Optimisation 2 - make the memcpy
......@@ -1603,8 +1561,7 @@ static void z8530_rx_done(struct z8530_channel *c)
RT_LOCK;
skb = c->skb;
/*
* The game we play for non DMA is similar. We want to
/* The game we play for non DMA is similar. We want to
* get the controller set up for the next packet as fast
* as possible. We potentially only have one byte + the
* fifo length for this. Thus we want to flip to the new
......@@ -1637,8 +1594,7 @@ static void z8530_rx_done(struct z8530_channel *c)
c->netdevice->stats.rx_packets++;
c->netdevice->stats.rx_bytes += ct;
}
/*
* If we received a frame we must now process it.
/* If we received a frame we must now process it.
*/
if (skb) {
skb_trim(skb, ct);
......@@ -1690,16 +1646,13 @@ netdev_tx_t z8530_queue_xmit(struct z8530_channel *c, struct sk_buff *skb)
return NETDEV_TX_BUSY;
/* PC SPECIFIC - DMA limits */
/*
* If we will DMA the transmit and its gone over the ISA bus
/* If we will DMA the transmit and its gone over the ISA bus
* limit, then copy to the flip buffer
*/
if(c->dma_tx && ((unsigned long)(virt_to_bus(skb->data+skb->len))>=16*1024*1024 || spans_boundary(skb)))
{
/*
* Send the flip buffer, and flip the flippy bit.
/* Send the flip buffer, and flip the flippy bit.
* We don't care which is used when just so long as
* we never use the same buffer twice in a row. Since
* only one buffer can be going out at a time the other
......@@ -1723,8 +1676,7 @@ netdev_tx_t z8530_queue_xmit(struct z8530_channel *c, struct sk_buff *skb)
}
EXPORT_SYMBOL(z8530_queue_xmit);
/*
* Module support
/* Module support
*/
static const char banner[] __initconst =
KERN_INFO "Generic Z85C30/Z85230 interface driver v0.02\n";
......
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