netdev - Re: [PATCH] [resend] 3c509: convert to isa_driver and pnp

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Date:	Sat, 9 Feb 2008 13:48:05 -0800
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject:  Re: [PATCH] [resend] 3c509: convert to isa_driver and pnp_driver v4

On Sat, 9 Feb 2008 22:33:07 +0100
Ondrej Zary <linux@...nbow-software.org> wrote:

> Hello,
> this patch converts 3c509 driver to isa_driver and pnp_driver. The result is 
> that autoloading using udev and hibernation works with ISA PnP cards. It also 
> adds hibernation support for non-PnP ISA cards.
> 
> xcvr module parameter was removed as its value was not used.
> 
> Tested using 3 ISA cards in various combinations of PnP and non-PnP modes. 
> EISA and MCA only compile-tested.
> 
> Signed-off-by: Ondrej Zary <linux@...nbow-software.org>
> 
> --- linux-2.6.24-orig/drivers/net/3c509.c	2008-01-27 19:48:19.000000000 +0100
> +++ linux-2.6.24-pentium/drivers/net/3c509.c	2008-02-07 17:58:45.000000000 +0100
> @@ -54,25 +54,24 @@
>  		v1.19a 28Oct2002 Davud Ruggiero <jdr@...falle.com>
>  			- Increase *read_eeprom udelay to workaround oops with 2 cards.
>  		v1.19b 08Nov2002 Marc Zyngier <maz@...d-wind.fr.eu.org>
> -		    - Introduce driver model for EISA cards.
> +			- Introduce driver model for EISA cards.
> +		v1.20  04Feb2008 Ondrej Zary <linux@...nbow-software.org>
> +			- convert to isa_driver and pnp_driver and some cleanups
>  */

Don't bother with comment, kernel uses git change log to figure out
who to blame.


>  #define DRV_NAME	"3c509"
> -#define DRV_VERSION	"1.19b"
> -#define DRV_RELDATE	"08Nov2002"
> +#define DRV_VERSION	"1.20"
> +#define DRV_RELDATE	"04Feb2008"
>  
>  /* A few values that may be tweaked. */
>  
>  /* Time in jiffies before concluding the transmitter is hung. */
>  #define TX_TIMEOUT  (400*HZ/1000)
> -/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
> -static int max_interrupt_work = 10;
>  
>  #include <linux/module.h>
> -#ifdef CONFIG_MCA
>  #include <linux/mca.h>
> -#endif
> -#include <linux/isapnp.h>
> +#include <linux/isa.h>
> +#include <linux/pnp.h>
>  #include <linux/string.h>
>  #include <linux/interrupt.h>
>  #include <linux/errno.h>
> @@ -97,10 +96,6 @@
>  
>  static char version[] __initdata = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@...ld.com\n";
>  
> -#if defined(CONFIG_PM) && (defined(CONFIG_MCA) || defined(CONFIG_EISA))
> -#define EL3_SUSPEND
> -#endif
> -
>  #ifdef EL3_DEBUG
>  static int el3_debug = EL3_DEBUG;
>  #else
> @@ -111,6 +106,7 @@
>   * a global variable so that the mca/eisa probe routines can increment
>   * it */
>  static int el3_cards = 0;
> +#define EL3_MAX_CARDS 8
>  
>  /* To minimize the size of the driver source I only define operating
>     constants if they are used several times.  You'll need the manual
> @@ -119,7 +115,7 @@
>  #define EL3_DATA 0x00
>  #define EL3_CMD 0x0e
>  #define EL3_STATUS 0x0e
> -#define	 EEPROM_READ 0x80
> +#define	EEPROM_READ 0x80
>  
>  #define EL3_IO_EXTENT	16
>  
> @@ -168,23 +164,31 @@
>   */
>  #define SKB_QUEUE_SIZE	64
>  
> +typedef enum { EL3_ISA, EL3_PNP, EL3_MCA, EL3_EISA } el3_cardtype;
> +

No typedef please (see checkpatch)

>  struct el3_private {
>  	struct net_device_stats stats;

Use network device stats in net_device now
> -	struct net_device *next_dev;
>  	spinlock_t lock;
>  	/* skb send-queue */
>  	int head, size;
>  	struct sk_buff *queue[SKB_QUEUE_SIZE];

What about sk_buff_head (linked list instead)?
> -	enum {
> -		EL3_MCA,
> -		EL3_PNP,
> -		EL3_EISA,
> -	} type;						/* type of device */
> -	struct device *dev;
> +	el3_cardtype type;
>  };
> -static int id_port __initdata = 0x110;	/* Start with 0x110 to avoid new sound cards.*/
> -static struct net_device *el3_root_dev;
> +static int id_port;
> +static int current_tag;
> +static struct net_device *el3_devs[EL3_MAX_CARDS];

I know is only ISA, but having a limit seems silly, can't the device just
use allocated space like other drivers.

> +
> +/* Parameters that may be passed into the module. */
> +static int debug = -1;
> +static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
> +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
> +static int max_interrupt_work = 10;
> +#ifdef CONFIG_PNP
> +static int nopnp;
> +#endif
>  


-- 
Stephen Hemminger <stephen.hemminger@...tta.com>


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