lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

gianfar: Optimize interrupt coalescing configuration

Browse Source 
Store the interrupt coalescing values in the form in which they will be
written to the interrupt coalescing registers.  This puts a little overhead
into the ethtool configuration, and takes it out of the interrupt handler

Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dai Haruki
2008-12-16 15:29:52 -08:00
committed by David S. Miller
parent b31a1d8b41
commit b46a8454cd
3 changed files with 40 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/gianfar.h
View File

@ -189,6 +189,12 @@ extern const char gfar_driver_version[];
#define mk_ic_value(count, time) (IC_ICEN | \
mk_ic_icft(count) | \
mk_ic_ictt(time))
#define get_icft_value(ic) (((unsigned long)ic & IC_ICFT_MASK) >> \
IC_ICFT_SHIFT)
#define get_ictt_value(ic) ((unsigned long)ic & IC_ICTT_MASK)
#define DEFAULT_TXIC mk_ic_value(DEFAULT_TXCOUNT, DEFAULT_TXTIME)
#define DEFAULT_RXIC mk_ic_value(DEFAULT_RXCOUNT, DEFAULT_RXTIME)
#define RCTRL_PAL_MASK 0x001f0000
#define RCTRL_VLEX 0x00002000
@ -694,8 +700,7 @@ struct gfar_private {
/* Configuration info for the coalescing features */
unsigned char txcoalescing;
unsigned short txcount;
unsigned short txtime;
unsigned long txic;
/* Buffer descriptor pointers */
struct txbd8 *tx_bd_base; /* First tx buffer descriptor */
@ -717,8 +722,7 @@ struct gfar_private {
/* RX Coalescing values */
unsigned char rxcoalescing;
unsigned short rxcount;
unsigned short rxtime;
unsigned long rxic;
struct rxbd8 *rx_bd_base; /* First Rx buffers */
struct rxbd8 *cur_rx; /* Next free rx ring entry */