lib8390: Fix coding-style issues and remove verion printing
Subsystems (3)
PATCH 2/2 lib8390: Fix coding-style issues and remove verion printing
Fix various checkpatch warnings.
Remove version printing so modules including lib8390 do not have to provide a global version string for successful compilation.
Signed-off-by Armin Wolf <[email protected]>
--- drivers/net/ethernet/8390/lib8390.c | 639 ++++++++++++++-------------- 1 file changed, 312 insertions(+), 327 deletions(-)
drivers/net/ethernet/8390/lib8390.c +312 -327
@@ -1,54 +1,51 @@ -/* 8390.c: A general NS8390 ethernet driver core for linux. */ -/* -Written 1992-94 by Donald Becker. - -Copyright 1993 United States Government as represented by the -Director, National Security Agency. - -This software may be used and distributed according to the terms -of the GNU General Public License, incorporated herein by reference. - -The author may be reached as [email protected], or C/O -Scyld Computing Corporation -410 Severn Ave., Suite 210 -Annapolis MD 21403 - - -This is the chip-specific code for many 8390-based ethernet adaptors. -This is not a complete driver, it must be combined with board-specific -code such as ne.c, wd.c, 3c503.c, etc. - -Seeing how at least eight drivers use this code, (not counting the -PCMCIA ones either) it is easy to break some card by what seems like -a simple innocent change. Please contact me or Donald if you think -you have found something that needs changing. -- PG - - -Changelog: - -Paul Gortmaker : remove set_bit lock, other cleanups. -Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to -ei_block_input() for eth_io_copy_and_sum(). -Paul Gortmaker : exchange static int ei_pingpong for a #define, -also add better Tx error handling. -Paul Gortmaker : rewrite Rx overrun handling as per NS specs. -Alexey Kuznetsov : use the 8390's six bit hash multicast filter. -Paul Gortmaker : tweak ANK's above multicast changes a bit. -Paul Gortmaker : update packet statistics for v2.1.x -Alan Cox : support arbitrary stupid port mappings on the -68K Macintosh. Support >16bit I/O spaces -Paul Gortmaker : add kmod support for auto-loading of the 8390 -module by all drivers that require it. -Alan Cox : Spinlocking work, added 'BUG_83C690' -Paul Gortmaker : Separate out Tx timeout code from Tx path. -Paul Gortmaker : Remove old unused single Tx buffer code. -Hayato Fujiwara : Add m32r support. -Paul Gortmaker : use skb_padto() instead of stack scratch area - -Sources: -The National Semiconductor LAN Databook, and the 3Com 3c503 databook. - -*/ +/* lib8390.c: A general NS8390 ethernet driver core for linux. */ +/* Written 1992-94 by Donald Becker. +* +* Copyright 1993 United States Government as represented by the +* Director, National Security Agency. +* +* This software may be used and distributed according to the terms +* of the GNU General Public License, incorporated herein by reference. +* +* The author may be reached as [email protected], or C/O +* Scyld Computing Corporation +* 410 Severn Ave., Suite 210 +*Annapolis MD 21403 +* +* This is the chip-specific code for many 8390-based ethernet adaptors. +* This is not a complete driver, it must be combined with board-specific +* code such as ne.c, wd.c, 3c503.c, etc. +* +* Seeing how at least eight drivers use this code, (not counting the +* PCMCIA ones either) it is easy to break some card by what seems like +* a simple innocent change. Please contact me or Donald if you think +* you have found something that needs changing. -- PG +*/ + +/* Changelog: +* +* Paul Gortmaker : remove set_bit lock, other cleanups. +* Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to +* ei_block_input() for eth_io_copy_and_sum(). +* Paul Gortmaker : exchange static int ei_pingpong for a #define, +* also add better Tx error handling. +* Paul Gortmaker : rewrite Rx overrun handling as per NS specs. +* Alexey Kuznetsov : use the 8390's six bit hash multicast filter. +* Paul Gortmaker : tweak ANK's above multicast changes a bit. +* Paul Gortmaker : update packet statistics for v2.1.x +* Alan Cox : support arbitrary stupid port mappings on the +* 68K Macintosh. Support >16bit I/O spaces +* Paul Gortmaker : add kmod support for auto-loading of the 8390 +* module by all drivers that require it. +* Alan Cox : Spinlocking work, added 'BUG_83C690' +* Paul Gortmaker : Separate out Tx timeout code from Tx path. +* Paul Gortmaker : Remove old unused single Tx buffer code. +* Hayato Fujiwara : Add m32r support. +* Paul Gortmaker : use skb_padto() instead of stack scratch area +* +* Sources: +* The National Semiconductor LAN Databook, and the 3Com 3c503 databook. +*/ #include <linux/module.h> #include <linux/kernel.h>
@@ -77,23 +74,25 @@#define BUG_83C690 /* These are the operational function interfaces to board-specific -routines. -void reset_8390(struct net_device *dev) -Resets the board associated with DEV, including a hardware reset of -the 8390. This is only called when there is a transmit timeout, and -it is always followed by 8390_init(). -void block_output(struct net_device *dev, int count, const unsigned char *buf, -int start_page) -Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The -"page" value uses the 8390's 256-byte pages. -void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page) -Read the 4 byte, page aligned 8390 header. *If* there is a -subsequent read, it will be of the rest of the packet. -void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) -Read COUNT bytes from the packet buffer into the skb data area. Start -reading from RING_OFFSET, the address as the 8390 sees it. This will always -follow the read of the 8390 header. -*/ +* routines. +* void reset_8390(struct net_device *dev) +* Resets the board associated with DEV, including a hardware reset +* of the 8390. This is only called when there is a transmit +* timeout, and it is always followed by 8390_init(). +* void block_output(struct net_device *dev, int count, +* const unsigned char *buf, int start_page) +* Write the COUNT bytes of BUF to the packet buffer at START_PAGE. +* The "page" value uses the 8390's 256-byte pages. +* void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, +* int ring_page) +* Read the 4 byte, page aligned 8390 header. *If* there is a +* subsequent read, it will be of the rest of the packet. +* void block_input(struct net_device *dev, int count, +* struct sk_buff *skb, int ring_offset) +* Read COUNT bytes from the packet buffer into the skb data area. +* Start reading from RING_OFFSET, the address as the 8390 sees it. +* This will always follow the read of the 8390 header. +*/ #define ei_reset_8390 (ei_local->reset_8390)#define ei_block_output (ei_local->block_output)#define ei_block_input (ei_local->block_input)
@@ -106,92 +105,87 @@ static void ei_receive(struct net_device *dev);static void ei_rx_overrun (struct net_device *dev);/* Routines generic to NS8390-based boards. */ -static void NS8390_trigger_send (struct net_device *dev,unsigned int length, -int start_page); +static void NS8390_trigger_send (struct net_device *dev, +unsigned int length,int start_page);static void do_set_multicast_list (struct net_device *dev);static void __NS8390_init (struct net_device *dev,int startp); -static unsigned version_printed;static u32 msg_enable; +module_param (msg_enable, uint,0444 );MODULE_PARM_DESC (msg_enable,"Debug message level (see linux/netdevice.h for bitmap)" ); -/* -* SMP and the 8390 setup. +/* SMP and the 8390 setup. * -* The 8390 isn't exactly designed to be multithreaded on RX/TX. There is -* a page register that controls bank and packet buffer access. We guard -* this with ei_local->page_lock. Nobody should assume or set the page other -* than zero when the lock is not held. Lock holders must restore page 0 -* before unlocking. Even pure readers must take the lock to protect in -* page 0. +* The 8390 isn't exactly designed to be multithreaded on RX/TX. There is +* a page register that controls bank and packet buffer access. We guard +* this with ei_local->page_lock. Nobody should assume or set the page other +* than zero when the lock is not held. Lock holders must restore page 0 +* before unlocking. Even pure readers must take the lock to protect in +* page 0. * -* To make life difficult the chip can also be very slow. We therefore can't -* just use spinlocks. For the longer lockups we disable the irq the device -* sits on and hold the lock. We must hold the lock because there is a dual -* processor case other than interrupts (get stats/set multicast list in -* parallel with each other and transmit). +* To make life difficult the chip can also be very slow. We therefore can't +* just use spinlocks. For the longer lockups we disable the irq the device +* sits on and hold the lock. We must hold the lock because there is a dual +* processor case other than interrupts (get stats/set multicast list in +* parallel with each other and transmit). * -* Note: in theory we can just disable the irq on the card _but_ there is -* a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs" -* enter lock, take the queued irq. So we waddle instead of flying. +* Note: in theory we can just disable the irq on the card _but_ there is +* a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs" +* enter lock, take the queued irq. So we waddle instead of flying. * -* Finally by special arrangement for the purpose of being generally -* annoying the transmit function is called bh atomic. That places -* restrictions on the user context callers as disable_irq won't save -* them. +* Finally by special arrangement for the purpose of being generally +* annoying the transmit function is called bh atomic. That places +* restrictions on the user context callers as disable_irq won't save +* them. * -* Additional explanation of problems with locking by Alan Cox: +* Additional explanation of problems with locking by Alan Cox: * -* "The author (me) didn't use spin_lock_irqsave because the slowness of the -* card means that approach caused horrible problems like losing serial data -* at 38400 baud on some chips. Remember many 8390 nics on PCI were ISA -* chips with FPGA front ends. +* "The author (me) didn't use spin_lock_irqsave because the slowness of the +* card means that approach caused horrible problems like losing serial data +* at 38400 baud on some chips. Remember many 8390 nics on PCI were ISA +* chips with FPGA front ends. * -* Ok the logic behind the 8390 is very simple: +* Ok the logic behind the 8390 is very simple: * -* Things to know -* - IRQ delivery is asynchronous to the PCI bus -* - Blocking the local CPU IRQ via spin locks was too slow -* - The chip has register windows needing locking work +* Things to know +* - IRQ delivery is asynchronous to the PCI bus +* - Blocking the local CPU IRQ via spin locks was too slow +* - The chip has register windows needing locking work * -* So the path was once (I say once as people appear to have changed it -* in the mean time and it now looks rather bogus if the changes to use -* disable_irq_nosync_irqsave are disabling the local IRQ) +* So the path was once (I say once as people appear to have changed it +* in the mean time and it now looks rather bogus if the changes to use +* disable_irq_nosync_irqsave are disabling the local IRQ) * +* Take the page lock +* Mask the IRQ on chip +* Disable the IRQ (but not mask locally- someone seems to have +* broken this with the lock validator stuff) +* [This must be _nosync as the page lock may otherwise deadlock us] * -* Take the page lock -* Mask the IRQ on chip -* Disable the IRQ (but not mask locally- someone seems to have -* broken this with the lock validator stuff) -* [This must be _nosync as the page lock may otherwise -* deadlock us] -* Drop the page lock and turn IRQs back on +* Drop the page lock and turn IRQs back on * -* At this point an existing IRQ may still be running but we can't -* get a new one +* At this point an existing IRQ may still be running but we can't +* get a new one * -* Take the lock (so we know the IRQ has terminated) but don't mask +* Take the lock (so we know the IRQ has terminated) but don't mask * the IRQs on the processor -* Set irqlock [for debug] * -* Transmit (slow as ****) +* Set irqlock [for debug] * -* re-enable the IRQ +* Transmit (slow as ****) * +* re-enable the IRQ * -* We have to use disable_irq because otherwise you will get delayed -* interrupts on the APIC bus deadlocking the transmit path. +* We have to use disable_irq because otherwise you will get delayed +* interrupts on the APIC bus deadlocking the transmit path. * -* Quite hairy but the chip simply wasn't designed for SMP and you can't -* even ACK an interrupt without risking corrupting other parallel -* activities on the chip." [lkml, 25 Jul 2007] +* Quite hairy but the chip simply wasn't designed for SMP and you can't +* even ACK an interrupt without risking corrupting other parallel +* activities on the chip." [lkml, 25 Jul 2007] */ - - -/** -* ei_open - Open/initialize the board. +/* ei_open - Open/initialize the board. * @dev: network device to initialize * * This routine goes all-out, setting everything
@@ -206,23 +200,22 @@ static int __ei_open(struct net_device *dev)if (dev->watchdog_timeo <=0 ) dev->watchdog_timeo =TX_TIMEOUT ; -/* -* Grab the page lock so we own the register set, then call -* the init function. +/* Grab the page lock so we own the register set, then call +* the init function. */ spin_lock_irqsave (&ei_local->page_lock, flags);__NS8390_init (dev,1 );/* Set the flag before we drop the lock, That way the IRQ arrives -after its set and we get no silly warnings */ +* after its set and we get no silly warnings +*/ netif_start_queue (dev);spin_unlock_irqrestore (&ei_local->page_lock, flags); ei_local->irqlock =0 ;return 0 ; } -/** -* ei_close - shut down network device +/* ei_close - shut down network device * @dev: network device to close * * Opposite of ei_open(). Only used when "ifconfig <devname> down" is done.
@@ -232,9 +225,7 @@ static int __ei_close(struct net_device *dev)struct ei_device *ei_local =netdev_priv (dev);unsigned long flags; -/* -* Hold the page lock during close -*/ +/* Hold the page lock during close */ spin_lock_irqsave (&ei_local->page_lock, flags);__NS8390_init (dev,0 );
@@ -243,8 +234,7 @@ static int __ei_close(struct net_device *dev)return 0 ; } -/** -* ei_tx_timeout - handle transmit time out condition +/* ei_tx_timeout - handle transmit time out condition * @dev: network device which has apparently fallen asleep * * Called by kernel when device never acknowledges a transmit has
@@ -261,8 +251,8 @@ static void __ei_tx_timeout(struct net_device *dev, unsigned int txqueue) dev->stats.tx_errors++;spin_lock_irqsave (&ei_local->page_lock, flags); - txsr =ei_inb (e8390_base+EN0_TSR ); - isr =ei_inb (e8390_base+EN0_ISR ); + txsr =ei_inb (e8390_base +EN0_TSR ); + isr =ei_inb (e8390_base +EN0_ISR );spin_unlock_irqrestore (&ei_local->page_lock, flags); netdev_dbg(dev, "Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d\n",
@@ -289,8 +279,7 @@ static void __ei_tx_timeout(struct net_device *dev, unsigned int txqueue)netif_wake_queue (dev); } -/** -* ei_start_xmit - begin packet transmission +/* ei_start_xmit - begin packet transmission * @skb: packet to be sent * @dev: network device to which packet is sent *
@@ -308,25 +297,24 @@ static netdev_tx_t __ei_start_xmit(struct sk_buff *skb,char *data = skb->data;if (skb->len <ETH_ZLEN ) { -memset (buf,0 ,ETH_ZLEN );/* more efficient than doing just the needed bits */ +/* More efficient than doing just the needed bits */ +memset (buf,0 ,ETH_ZLEN );memcpy (buf, data, skb->len); send_length =ETH_ZLEN ; data = buf; }/* Mask interrupts from the ethercard. -SMP: We have to grab the lock here otherwise the IRQ handler -on another CPU can flip window and race the IRQ mask set. We end -up trashing the mcast filter not disabling irqs if we don't lock */ +* SMP: We have to grab the lock here otherwise the IRQ handler +* on another CPU can flip window and race the IRQ mask set. We end +* up trashing the mcast filter not disabling irqs if we don't lock. +*/ spin_lock_irqsave (&ei_local->page_lock, flags);ei_outb_p (0x00 , e8390_base +EN0_IMR );spin_unlock_irqrestore (&ei_local->page_lock, flags); - -/* -* Slow phase with lock held. -*/ +/* Slow phase with lock held. */ disable_irq_nosync_lockdep_irqsave (dev->irq, &flags);
@@ -334,8 +322,7 @@ static netdev_tx_t __ei_start_xmit(struct sk_buff *skb, ei_local->irqlock =1 ; -/* -* We have two Tx slots available for use. Find the first free +/* We have two Tx slots available for use. Find the first free * slot, and then perform some sanity checks. With two Tx bufs, * you get very close to transmitting back-to-back packets. With * only one Tx buf, the transmitter sits idle while you reload the
@@ -347,18 +334,18 @@ static netdev_tx_t __ei_start_xmit(struct sk_buff *skb, ei_local->tx1 = send_length;if ((netif_msg_tx_queued (ei_local )) && ei_local->tx2 >0 ) -netdev_dbg (dev, -"idle transmitter tx2=%d, lasttx=%d, txing=%d\n" , - ei_local->tx2, ei_local->lasttx, ei_local->txing); +netdev_dbg (dev,"idle transmitter tx2=%d, lasttx=%d, txing=%d\n" , + ei_local->tx2, ei_local->lasttx, + ei_local->txing); }else if (ei_local->tx2 ==0 ) { - output_page = ei_local->tx_start_page +TX_PAGES /2 ; + output_page = ei_local->tx_start_page +TX_PAGES /2 ; ei_local->tx2 = send_length;if ((netif_msg_tx_queued (ei_local )) && ei_local->tx1 >0 ) -netdev_dbg (dev, -"idle transmitter, tx1=%d, lasttx=%d, txing=%d\n" , - ei_local->tx1, ei_local->lasttx, ei_local->txing); - }else {/* We should never get here. */ +netdev_dbg (dev,"idle transmitter, tx1=%d, lasttx=%d, txing=%d\n" , + ei_local->tx1, ei_local->lasttx, + ei_local->txing); + }else {/* We should never get here. */ netif_dbg (ei_local, tx_err, dev,"No Tx buffers free! tx1=%d tx2=%d last=%d\n" , ei_local->tx1, ei_local->tx2, ei_local->lasttx);
@@ -371,8 +358,7 @@ static netdev_tx_t __ei_start_xmit(struct sk_buff *skb,return NETDEV_TX_BUSY ; } -/* -* Okay, now upload the packet and trigger a send if the transmitter +/* Okay, now upload the packet and trigger a send if the transmitter * isn't already sending. If it is busy, the interrupt handler will * trigger the send later, upon receiving a Tx done interrupt. */
@@ -389,8 +375,9 @@ static netdev_tx_t __ei_start_xmit(struct sk_buff *skb, ei_local->tx2 =-1 ; ei_local->lasttx =-2 ; } - }else + }else { ei_local->txqueue++; + }if (ei_local->tx1 && ei_local->tx2)netif_stop_queue (dev);
@@ -410,8 +397,7 @@ static netdev_tx_t __ei_start_xmit(struct sk_buff *skb,return NETDEV_TX_OK ; } -/** -* ei_interrupt - handle the interrupts from an 8390 +/* ei_interrupt - handle the interrupts from an 8390 * @irq: interrupt number * @dev_id: a pointer to the net_device *
@@ -429,15 +415,12 @@ static irqreturn_t __ei_interrupt(int irq, void *dev_id)int interrupts, nr_serviced =0 ;struct ei_device *ei_local =netdev_priv (dev); -/* -* Protect the irq test too. -*/ +/* Protect the irq test too. */ spin_lock (&ei_local->page_lock);if (ei_local->irqlock) { -/* -* This might just be an interrupt for a PCI device sharing +/* This might just be an interrupt for a PCI device sharing * this line */ netdev_err(dev, "Interrupted while interrupts are masked! isr=%#2x imr=%#2x\n",
@@ -448,7 +431,7 @@ static irqreturn_t __ei_interrupt(int irq, void *dev_id) }/* Change to page 0 and read the intr status reg. */ -ei_outb_p (E8390_NODMA +E8390_PAGE0 , e8390_base +E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 , e8390_base +E8390_CMD );netif_dbg (ei_local, intr, dev,"interrupt(isr=%#2.2x)\n" ,ei_inb_p (e8390_base +EN0_ISR ));
@@ -462,9 +445,9 @@ static irqreturn_t __ei_interrupt(int irq, void *dev_id) interrupts =0 ;break ; } -if (interrupts &ENISR_OVER ) +if (interrupts &ENISR_OVER ) {ei_rx_overrun (dev); -else if (interrupts & (ENISR_RX +ENISR_RX_ERR )) { + }else if (interrupts & (ENISR_RX +ENISR_RX_ERR )) {/* Got a good (?) packet. */ ei_receive (dev); }
@@ -475,30 +458,39 @@ static irqreturn_t __ei_interrupt(int irq, void *dev_id)ei_tx_err (dev);if (interrupts &ENISR_COUNTERS ) { - dev->stats.rx_frame_errors +=ei_inb_p (e8390_base +EN0_COUNTER0 ); - dev->stats.rx_crc_errors +=ei_inb_p (e8390_base +EN0_COUNTER1 ); - dev->stats.rx_missed_errors +=ei_inb_p (e8390_base +EN0_COUNTER2 ); -ei_outb_p (ENISR_COUNTERS , e8390_base +EN0_ISR );/* Ack intr. */ + dev->stats.rx_frame_errors += +ei_inb_p (e8390_base +EN0_COUNTER0 ); + dev->stats.rx_crc_errors += +ei_inb_p (e8390_base +EN0_COUNTER1 ); + dev->stats.rx_missed_errors += +ei_inb_p (e8390_base +EN0_COUNTER2 ); +/* Ack intr. */ +ei_outb_p (ENISR_COUNTERS , e8390_base +EN0_ISR ); }/* Ignore any RDC interrupts that make it back to here. */ if (interrupts &ENISR_RDC )ei_outb_p (ENISR_RDC , e8390_base +EN0_ISR ); -ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START , e8390_base +E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START , + e8390_base +E8390_CMD ); }if (interrupts && (netif_msg_intr (ei_local))) { -ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START , e8390_base +E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START , + e8390_base +E8390_CMD );if (nr_serviced >=MAX_SERVICE ) {/* 0xFF is valid for a card removal */ if (interrupts !=0xFF )netdev_warn (dev,"Too much work at interrupt, status %#2.2x\n" , interrupts); -ei_outb_p (ENISR_ALL , e8390_base +EN0_ISR );/* Ack. most intrs. */ +/* Ack. most intrs. */ +ei_outb_p (ENISR_ALL , e8390_base +EN0_ISR ); }else { -netdev_warn (dev,"unknown interrupt %#2x\n" , interrupts); -ei_outb_p (0xff , e8390_base +EN0_ISR );/* Ack. all intrs. */ +netdev_warn (dev,"unknown interrupt %#2x\n" , + interrupts); +/* Ack. all intrs. */ +ei_outb_p (0xff , e8390_base +EN0_ISR ); } }spin_unlock (&ei_local->page_lock);
@@ -514,8 +506,7 @@ static void __ei_poll(struct net_device *dev) }#endif -/** -* ei_tx_err - handle transmitter error +/* ei_tx_err - handle transmitter error * @dev: network device which threw the exception * * A transmitter error has happened. Most likely excess collisions (which
@@ -532,30 +523,22 @@ static void ei_tx_err(struct net_device *dev) {unsigned long e8390_base = dev->base_addr;/* ei_local is used on some platforms via the EI_SHIFT macro */ -struct ei_device *ei_local__maybe_unused =netdev_priv (dev); -unsigned char txsr =ei_inb_p (e8390_base+EN0_TSR ); -unsigned char tx_was_aborted = txsr & (ENTSR_ABT +ENTSR_FU ); - -#ifdef VERBOSE_ERROR_DUMP -netdev_dbg (dev,"transmitter error (%#2x):" , txsr); -if (txsr &ENTSR_ABT ) -pr_cont (" excess-collisions " ); -if (txsr &ENTSR_ND ) -pr_cont (" non-deferral " ); -if (txsr &ENTSR_CRS ) -pr_cont (" lost-carrier " ); -if (txsr &ENTSR_FU ) -pr_cont (" FIFO-underrun " ); -if (txsr &ENTSR_CDH ) -pr_cont (" lost-heartbeat " ); -pr_cont ("\n" ); -#endif - +struct ei_device *ei_local =netdev_priv (dev); +unsigned char txsr =ei_inb_p (e8390_base +EN0_TSR ); +unsigned char tx_was_aborted = txsr & (ENTSR_ABT +ENTSR_FU ); + +if (netif_msg_tx_err (ei_local)) { +netdev_err (dev,"Transmitter error (%#2x): %s %s %s %s %s" , txsr, + (txsr &ENTSR_ABT ) ?"excess-collisions" :"" , + (txsr &ENTSR_ND ) ?"non-deferral" :"" , + (txsr &ENTSR_CRS ) ?"lost-carrier" :"" , + (txsr &ENTSR_FU ) ?"FIFO-underrun" :"" , + (txsr &ENTSR_CDH ) ?"lost-heartbeat" :"" ); + }ei_outb_p (ENISR_TX_ERR , e8390_base +EN0_ISR );/* Ack intr. */ - -if (tx_was_aborted) +if (tx_was_aborted) {ei_tx_intr (dev); -else { + }else { dev->stats.tx_errors++;if (txsr &ENTSR_CRS ) dev->stats.tx_carrier_errors++;
@@ -566,8 +549,7 @@ static void ei_tx_err(struct net_device *dev) } } -/** -* ei_tx_intr - transmit interrupt handler +/* ei_tx_intr - transmit interrupt handler * @dev: network device for which tx intr is handled * * We have finished a transmit: check for errors and then trigger the next
@@ -582,8 +564,7 @@ static void ei_tx_intr(struct net_device *dev)ei_outb_p (ENISR_TX , e8390_base +EN0_ISR );/* Ack intr. */ -/* -* There are two Tx buffers, see which one finished, and trigger +/* There are two Tx buffers, see which one finished, and trigger * the send of another one if it exists. */ ei_local->txqueue--;
@@ -595,12 +576,14 @@ static void ei_tx_intr(struct net_device *dev) ei_local->tx1 =0 ;if (ei_local->tx2 >0 ) { ei_local->txing =1 ; -NS8390_trigger_send (dev, ei_local->tx2, ei_local->tx_start_page +6 ); +NS8390_trigger_send (dev, ei_local->tx2, + ei_local->tx_start_page +6 );netif_trans_update (dev); ei_local->tx2 =-1 , ei_local->lasttx =2 ; - }else + }else { ei_local->lasttx =20 , ei_local->txing =0 ; + } }else if (ei_local->tx2 <0 ) {if (ei_local->lasttx !=2 && ei_local->lasttx !=-2 ) pr_err("%s: bogus last_tx_buffer %d, tx2=%d\n",
@@ -608,23 +591,27 @@ static void ei_tx_intr(struct net_device *dev) ei_local->tx2 =0 ;if (ei_local->tx1 >0 ) { ei_local->txing =1 ; -NS8390_trigger_send (dev, ei_local->tx1, ei_local->tx_start_page); +NS8390_trigger_send (dev, ei_local->tx1, + ei_local->tx_start_page);netif_trans_update (dev); ei_local->tx1 =-1 ; ei_local->lasttx =1 ; - }else + }else { ei_local->lasttx =10 , ei_local->txing =0 ; - }/* else -netdev_warn(dev, "unexpected TX-done interrupt, lasttx=%d\n", -ei_local->lasttx); -*/ + } + } +/* else { +* netdev_warn(dev, "unexpected TX-done interrupt, lasttx=%d\n", +* ei_local->lasttx); +* } +*/ /* Minimize Tx latency: update the statistics after we restart TXing. */ if (status &ENTSR_COL ) dev->stats.collisions++; -if (status &ENTSR_PTX ) +if (status &ENTSR_PTX ) { dev->stats.tx_packets++; -else { + }else { dev->stats.tx_errors++;if (status &ENTSR_ABT ) { dev->stats.tx_aborted_errors++;
@@ -642,8 +629,7 @@ static void ei_tx_intr(struct net_device *dev)netif_wake_queue (dev); } -/** -* ei_receive - receive some packets +/* ei_receive - receive some packets * @dev: network device with which receive will be run * * We have a good packet(s), get it/them out of the buffers.
@@ -658,26 +644,29 @@ static void ei_receive(struct net_device *dev)unsigned short current_offset;int rx_pkt_count =0 ;struct e8390_pkt_hdr rx_frame; -int num_rx_pages = ei_local->stop_page-ei_local->rx_start_page; +int num_rx_pages = ei_local->stop_page - ei_local->rx_start_page;while (++rx_pkt_count <10 ) {int pkt_len, pkt_stat;/* Get the rx page (incoming packet pointer). */ -ei_outb_p (E8390_NODMA +E8390_PAGE1 , e8390_base +E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE1 , e8390_base +E8390_CMD ); rxing_page =ei_inb_p (e8390_base +EN1_CURPAG ); -ei_outb_p (E8390_NODMA +E8390_PAGE0 , e8390_base +E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 , e8390_base +E8390_CMD ); -/* Remove one frame from the ring. Boundary is always a page behind. */ +/* Remove one frame from the ring. +* Boundary is always a page behind. +*/ this_frame =ei_inb_p (e8390_base +EN0_BOUNDARY ) +1 ;if (this_frame >= ei_local->stop_page) this_frame = ei_local->rx_start_page; -/* Someday we'll omit the previous, iff we never get this message. -(There is at least one clone claimed to have a problem.) - -Keep quiet if it looks like a card removal. One problem here -is that some clones crash in roughly the same way. +/* Someday we'll omit the previous, if we never get +* this message. (There is at least one clone claimed +* to have a problem.) +* +* Keep quiet if it looks like a card removal. One problem +* here is that some clones crash in roughly the same way. */ if ((netif_msg_rx_status(ei_local)) && this_frame != ei_local->current_page &&
@@ -695,17 +684,19 @@ static void ei_receive(struct net_device *dev) pkt_len = rx_frame.count -sizeof (struct e8390_pkt_hdr ); pkt_stat = rx_frame.status; - next_frame = this_frame +1 + ((pkt_len+4 )>>8 ); + next_frame = this_frame +1 + ((pkt_len +4 ) >>8 ); -/* Check for bogosity warned by 3c503 book: the status byte is never -written. This happened a lot during testing! This code should be -cleaned up someday. */ +/* Check for bogosity warned by 3c503 book: the status byte is +* never written. This happened a lot during testing! This code +* should be cleaned up someday. +*/ if (rx_frame.next != next_frame && rx_frame.next != next_frame +1 && rx_frame.next != next_frame - num_rx_pages && rx_frame.next != next_frame +1 - num_rx_pages) { ei_local->current_page = rxing_page; -ei_outb (ei_local->current_page-1 , e8390_base+EN0_BOUNDARY ); +ei_outb (ei_local->current_page -1 , + e8390_base +EN0_BOUNDARY ); dev->stats.rx_errors++;continue ; }
@@ -721,24 +712,22 @@ static void ei_receive(struct net_device *dev)struct sk_buff *skb; skb =netdev_alloc_skb (dev, pkt_len +2 ); -if (skb ==NULL ) { -netif_err (ei_local, rx_err, dev, -"Couldn't allocate a sk_buff of size %d\n" , - pkt_len); +if (!skb) { dev->stats.rx_dropped++;break ; - }else { -skb_reserve (skb,2 );/* IP headers on 16 byte boundaries */ -skb_put (skb, pkt_len);/* Make room */ -ei_block_input (dev, pkt_len, skb, current_offset +sizeof (rx_frame)); - skb->protocol =eth_type_trans (skb, dev); -if (!skb_defer_rx_timestamp (skb)) -netif_rx (skb); - dev->stats.rx_packets++; - dev->stats.rx_bytes += pkt_len; -if (pkt_stat &ENRSR_PHY ) - dev->stats.multicast++; } +/* IP headers on 16 byte boundaries */ +skb_reserve (skb,2 ); +skb_put (skb, pkt_len);/* Make room */ +ei_block_input (dev, pkt_len, skb, + current_offset +sizeof (rx_frame)); + skb->protocol =eth_type_trans (skb, dev); +if (!skb_defer_rx_timestamp (skb)) +netif_rx (skb); + dev->stats.rx_packets++; + dev->stats.rx_bytes += pkt_len; +if (pkt_stat &ENRSR_PHY ) + dev->stats.multicast++; }else { netif_err(ei_local, rx_err, dev, "bogus packet: status=%#2x nxpg=%#2x size=%d\n",
@@ -751,23 +740,25 @@ static void ei_receive(struct net_device *dev) } next_frame = rx_frame.next; -/* This _should_ never happen: it's here for avoiding bad clones. */ +/* This _should_ never happen: +* it's here for avoiding bad clones. +*/ if (next_frame >= ei_local->stop_page) {netdev_notice (dev,"next frame inconsistency, %#2x\n" , next_frame); next_frame = ei_local->rx_start_page; } ei_local->current_page = next_frame; -ei_outb_p (next_frame-1 , e8390_base+EN0_BOUNDARY ); +ei_outb_p (next_frame -1 , e8390_base +EN0_BOUNDARY ); }/* We used to also ack ENISR_OVER here, but that would sometimes mask -a real overrun, leaving the 8390 in a stopped state with rec'vr off. */ -ei_outb_p (ENISR_RX +ENISR_RX_ERR , e8390_base+EN0_ISR ); +* a real overrun, leaving the 8390 in a stopped state with rec'vr off. +*/ +ei_outb_p (ENISR_RX +ENISR_RX_ERR , e8390_base +EN0_ISR ); } -/** -* ei_rx_overrun - handle receiver overrun +/* ei_rx_overrun - handle receiver overrun * @dev: network device which threw exception * * We have a receiver overrun: we have to kick the 8390 to get it started
@@ -786,18 +777,16 @@ static void ei_rx_overrun(struct net_device *dev)/* ei_local is used on some platforms via the EI_SHIFT macro */ struct ei_device *ei_local__maybe_unused =netdev_priv (dev); -/* -* Record whether a Tx was in progress and then issue the +/* Record whether a Tx was in progress and then issue the * stop command. */ - was_txing =ei_inb_p (e8390_base+E8390_CMD ) &E8390_TRANS ; -ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_STOP , e8390_base+E8390_CMD ); + was_txing =ei_inb_p (e8390_base +E8390_CMD ) &E8390_TRANS ; +ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_STOP , e8390_base +E8390_CMD );netif_dbg (ei_local, rx_err, dev,"Receiver overrun\n" ); dev->stats.rx_over_errors++; -/* -* Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total. +/* Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total. * Early datasheets said to poll the reset bit, but now they say that * it "is not a reliable indicator and subsequently should be ignored." * We wait at least 10ms.
@@ -805,47 +794,44 @@ static void ei_rx_overrun(struct net_device *dev)mdelay (10 ); -/* -* Reset RBCR[01] back to zero as per magic incantation. -*/ -ei_outb_p (0x00 , e8390_base+EN0_RCNTLO ); -ei_outb_p (0x00 , e8390_base+EN0_RCNTHI ); +/* Reset RBCR[01] back to zero as per magic incantation. */ +ei_outb_p (0x00 , e8390_base +EN0_RCNTLO ); +ei_outb_p (0x00 , e8390_base +EN0_RCNTHI ); -/* -* See if any Tx was interrupted or not. According to NS, this +/* See if any Tx was interrupted or not. According to NS, this * step is vital, and skipping it will cause no end of havoc. */ if (was_txing) { -unsigned char tx_completed =ei_inb_p (e8390_base+EN0_ISR ) & (ENISR_TX +ENISR_TX_ERR ); +unsigned char tx_completed =ei_inb_p (e8390_base +EN0_ISR ) & + (ENISR_TX +ENISR_TX_ERR ); +if (!tx_completed) must_resend =1 ; } -/* -* Have to enter loopback mode and then restart the NIC before +/* Have to enter loopback mode and then restart the NIC before * you are allowed to slurp packets up off the ring. */ +ei_outb_p (E8390_TXOFF , e8390_base +EN0_TXCR ); -ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START , e8390_base +E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START , + e8390_base +E8390_CMD ); + +/* Clear the Rx ring of all the debris, and ack the interrupt. */ -/* -* Clear the Rx ring of all the debris, and ack the interrupt. -*/ ei_receive (dev); -ei_outb_p (ENISR_OVER , e8390_base+EN0_ISR ); +ei_outb_p (ENISR_OVER , e8390_base +EN0_ISR ); + +/* Leave loopback mode, and resend any packet that got stopped */ -/* -* Leave loopback mode, and resend any packet that got stopped. -*/ ei_outb_p (E8390_TXCONFIG , e8390_base +EN0_TXCR );if (must_resend) -ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START +E8390_TRANS , e8390_base +E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START +E8390_TRANS , + e8390_base +E8390_CMD ); } -/* -* Collect the stats. This is called unlocked and from several contexts. -*/ +/* Collect the stats. This is called unlocked and from several contexts. */ static struct net_device_stats *__ei_get_stats (struct net_device *dev) {
@@ -867,8 +853,7 @@ static struct net_device_stats *__ei_get_stats(struct net_device *dev)return &dev->stats; } -/* -* Form the 64 bit 8390 multicast table from the linked list of addresses +/* Form the 64 bit 8390 multicast table from the linked list of addresses * associated with this dev structure. */
@@ -878,16 +863,14 @@ static inline void make_mc_bits(u8 *bits, struct net_device *dev)netdev_for_each_mc_addr (ha, dev) {u32 crc =ether_crc (ETH_ALEN , ha->addr); -/* -* The 8390 uses the 6 most significant bits of the +/* The 8390 uses the 6 most significant bits of the * CRC to index the multicast table. */ - bits[crc>>29 ] |= (1 <<((crc>>26 )&7 )); + bits[crc >>29 ] |= (1 << ((crc >>26 ) &7 )); } } -/** -* do_set_multicast_list - set/clear multicast filter +/* do_set_multicast_list - set/clear multicast filter * @dev: net device for which multicast filter is adjusted * * Set or clear the multicast filter for this adaptor. May be called
@@ -900,15 +883,16 @@ static void do_set_multicast_list(struct net_device *dev)int i;struct ei_device *ei_local =netdev_priv (dev); -if (!(dev->flags&(IFF_PROMISC |IFF_ALLMULTI ))) { +if (!(dev->flags & (IFF_PROMISC |IFF_ALLMULTI ))) {memset (ei_local->mcfilter,0 ,8 );if (!netdev_mc_empty (dev))make_mc_bits (ei_local->mcfilter, dev); - }else -memset (ei_local->mcfilter,0xFF ,8 );/* mcast set to accept-all */ + }else { +/* mcast set to accept-all */ +memset (ei_local->mcfilter,0xFF ,8 ); + } -/* -* DP8390 manuals don't specify any magic sequence for altering +/* DP8390 manuals don't specify any magic sequence for altering * the multicast regs on an already running card. To be safe, we * ensure multicast mode is off prior to loading up the new hash * table. If this proves to be not enough, we can always resort
@@ -924,16 +908,17 @@ static void do_set_multicast_list(struct net_device *dev)ei_outb_p (E8390_RXCONFIG , e8390_base +EN0_RXCR );ei_outb_p (E8390_NODMA +E8390_PAGE1 , e8390_base +E8390_CMD );for (i =0 ; i <8 ; i++) { -ei_outb_p (ei_local->mcfilter[i], e8390_base +EN1_MULT_SHIFT (i)); +ei_outb_p (ei_local->mcfilter[i], + e8390_base +EN1_MULT_SHIFT (i));#ifndef BUG_83C690 -if (ei_inb_p (e8390_base +EN1_MULT_SHIFT (i)) != ei_local->mcfilter[i]) -netdev_err (dev,"Multicast filter read/write mismap %d\n" , - i); +if (ei_inb_p (e8390_base +EN1_MULT_SHIFT (i)) != + ei_local->mcfilter[i]) +netdev_err (dev,"Multicast filter read/write mismap %d\n" , i);#endif }ei_outb_p (E8390_NODMA +E8390_PAGE0 , e8390_base +E8390_CMD ); -if (dev->flags&IFF_PROMISC ) +if (dev->flags &IFF_PROMISC )ei_outb_p (E8390_RXCONFIG |0x18 , e8390_base +EN0_RXCR );else if (dev->flags &IFF_ALLMULTI || !netdev_mc_empty (dev))ei_outb_p (E8390_RXCONFIG |0x08 , e8390_base +EN0_RXCR );
@@ -941,10 +926,9 @@ static void do_set_multicast_list(struct net_device *dev)ei_outb_p (E8390_RXCONFIG , e8390_base +EN0_RXCR ); } -/* -* Called without lock held. This is invoked from user context and may -* be parallel to just about everything else. Its also fairly quick and -* not called too often. Must protect against both bh and irq users +/* Called without lock held. This is invoked from user context and may +* be parallel to just about everything else. Its also fairly quick and +* not called too often. Must protect against both bh and irq users */ static void __ei_set_multicast_list (struct net_device *dev)
@@ -969,9 +953,6 @@ static void ethdev_setup(struct net_device *dev) {struct ei_device *ei_local =netdev_priv (dev); -if ((msg_enable &NETIF_MSG_DRV ) && (version_printed++ ==0 )) -pr_info ("%s" , version); -ether_setup (dev);spin_lock_init (&ei_local->page_lock);
@@ -991,14 +972,10 @@ static struct net_device *____alloc_ei_netdev(int size) NET_NAME_UNKNOWN, ethdev_setup); } - - -/* This page of functions should be 8390 generic */ /* Follow National Semi's recommendations for initializing the "NIC". */ -/** -* NS8390_init - initialize 8390 hardware +/* NS8390_init - initialize 8390 hardware * @dev: network device to initialize * @startp: boolean. non-zero value to initiate chip processing *
@@ -1017,7 +994,8 @@ static void __NS8390_init(struct net_device *dev, int startp)if (sizeof (struct e8390_pkt_hdr ) !=4 )panic ("8390.c: header struct mispacked\n" );/* Follow National Semi's recommendations for initing the DP83902. */ -ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_STOP , e8390_base+E8390_CMD );/* 0x21 */ +ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_STOP , + e8390_base +E8390_CMD );/* 0x21 */ ei_outb_p (endcfg, e8390_base +EN0_DCFG );/* 0x48 or 0x49 */ /* Clear the remote byte count registers. */ ei_outb_p (0x00 , e8390_base +EN0_RCNTLO );
@@ -1027,10 +1005,13 @@ static void __NS8390_init(struct net_device *dev, int startp)ei_outb_p (E8390_TXOFF , e8390_base +EN0_TXCR );/* 0x02 */ /* Set the transmit page and receive ring. */ ei_outb_p (ei_local->tx_start_page, e8390_base +EN0_TPSR ); - ei_local->tx1 = ei_local->tx2 =0 ; + ei_local->tx1 =0 ; + ei_local->tx2 =0 ;ei_outb_p (ei_local->rx_start_page, e8390_base +EN0_STARTPG ); -ei_outb_p (ei_local->stop_page-1 , e8390_base +EN0_BOUNDARY );/* 3c503 says 0x3f,NS0x26*/ - ei_local->current_page = ei_local->rx_start_page;/* assert boundary+1 */ +/* 3c503 says 0x3f,NS0x26*/ +ei_outb_p (ei_local->stop_page -1 , e8390_base +EN0_BOUNDARY ); +/* assert boundary+1 */ + ei_local->current_page = ei_local->rx_start_page;ei_outb_p (ei_local->stop_page, e8390_base +EN0_STOPPG );/* Clear the pending interrupts and mask. */ ei_outb_p (0xFF , e8390_base +EN0_ISR );
@@ -1038,25 +1019,28 @@ static void __NS8390_init(struct net_device *dev, int startp)/* Copy the station address into the DS8390 registers. */ -ei_outb_p (E8390_NODMA +E8390_PAGE1 +E8390_STOP , e8390_base+E8390_CMD );/* 0x61 */ +ei_outb_p (E8390_NODMA +E8390_PAGE1 +E8390_STOP , + e8390_base +E8390_CMD );/* 0x61 */ for (i =0 ; i <6 ; i++) {ei_outb_p (dev->dev_addr[i], e8390_base +EN1_PHYS_SHIFT (i)); -if ((netif_msg_probe (ei_local )) && -ei_inb_p (e8390_base +EN1_PHYS_SHIFT (i)) != dev->dev_addr[i]) +if ((netif_msg_probe (ei_local )) &&ei_inb_p (e8390_base + +EN1_PHYS_SHIFT (i)) != dev->dev_addr[i])netdev_err (dev,"Hw. address read/write mismap %d\n" , i); }ei_outb_p (ei_local->rx_start_page, e8390_base +EN1_CURPAG ); -ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_STOP , e8390_base+E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_STOP , e8390_base +E8390_CMD ); - ei_local->tx1 = ei_local->tx2 =0 ; + ei_local->tx1 =0 ; + ei_local->tx2 =0 ; ei_local->txing =0 ;if (startp) {ei_outb_p (0xff , e8390_base +EN0_ISR );ei_outb_p (ENISR_ALL , e8390_base +EN0_IMR ); -ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START , e8390_base+E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 +E8390_START , + e8390_base +E8390_CMD );ei_outb_p (E8390_TXCONFIG , e8390_base +EN0_TXCR );/* xmit on. */ /* 3c503 TechMan says rxconfig only after the NIC is started. */ ei_outb_p (E8390_RXCONFIG , e8390_base +EN0_RXCR );/* rx on, */
@@ -1065,15 +1049,16 @@ static void __NS8390_init(struct net_device *dev, int startp) }/* Trigger a transmit start, assuming the length is valid. -Always called with the page lock held */ +* Always called with the page lock held. +*/ static void NS8390_trigger_send (struct net_device *dev,unsigned int length, -int start_page) +int start_page) {unsigned long e8390_base = dev->base_addr; struct ei_device *ei_local __attribute((unused)) = netdev_priv(dev); -ei_outb_p (E8390_NODMA +E8390_PAGE0 , e8390_base+E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_PAGE0 , e8390_base +E8390_CMD );if (ei_inb_p (e8390_base +E8390_CMD ) &E8390_TRANS ) {netdev_warn (dev,"trigger_send() called with the transmitter busy\n" );
@@ -1082,5 +1067,5 @@ static void NS8390_trigger_send(struct net_device *dev, unsigned int length,ei_outb_p (length &0xff , e8390_base +EN0_TCNTLO );ei_outb_p (length >>8 , e8390_base +EN0_TCNTHI );ei_outb_p (start_page, e8390_base +EN0_TPSR ); -ei_outb_p (E8390_NODMA +E8390_TRANS +E8390_START , e8390_base+E8390_CMD ); +ei_outb_p (E8390_NODMA +E8390_TRANS +E8390_START , e8390_base +E8390_CMD ); }
--
2.20.1
David Miller
maintainerFrom: Armin Wolf <[email protected]>
Date: Thu, 23 Jul 2020 20:36:04 +0200
Quoted 6 lines
Fix various checkpatch warnings.
Remove version printing so modules including lib8390 do not have to provide a global version string for successful compilation.Signed-off-by Armin Wolf <[email protected]>
Honestly, I see little to no value to all this comment layout churn.
I'm not applying this, sorry.