From: "Qinghua(Kevin) Ye" <[EMAIL PROTECTED]> Date: Thu, 7 Jul 2005 17:43:06 -0600
> So the tg3_tx() and tg3_start_xmit do not include any code of reprogramming > the hardware? Right, they just process the TX ring. > What kinds of code can be classifed to reprogramming the hardware? Should > the tw32_t/rx_mbox and tw32_mailbox operation be classified into this > catalog? Anything other than normal packet processing. The MBOX writes used to process the packets in the RX ring would not be considered reprogramming of the chip. > Another problem is about the Flushing the Status block to host memory. In > your original code, this is done by > tr32(MAILBOX_INTERRUPT_0+TG3_64BIT_REG_LOW). This readback is necessary to flush out any posted PCI writes to chip registers in most circumstances. The one exception is tg3_restart_ints() and normal interrupt handling. The current 2.6.13-rcX tg3.c driver is totally revamped wrt. interrupt processing, PIO flushes, and locking in general. You may wish to check it out. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
