> > > Could you please answer few questions? > > > > > > 1) I've found status tag is returned in status block even if > > > bit 9 of Misc. > > > Host Control Register is not set, is it ok? > > > > Which controller are you using? This bit is reserved on the 5700 > > (which didn't support tagged status mode) but all other controllers > > should support it and all of the Broadcom drivers will always > > enable it. > > I tested it on bcm5701 & bcm5721 > > > > > > > > > 2) Status tag is returned in bits 0-7 of status tag field of > > > status block, > > > as long as i know it should be returned in bits 31-24, > is it ok? > > > > Not sure what you mean by this. If you're seeing it in bits 31-24 > > of the status block then there may be an endian issue on > your system. > > Check that byte/word swapping is set correctly. > > > > > > > > 3) If i try to return processed tag (at the end of ISR) in > > > Mailbox 0 register: > > > CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, status_tag << 24); > > > it would lead to disabled interrupts. > > > I've thought this should not happen cause in_isr bits > > > (0-23) are cleared. > > > > Writing a non-zero value to bits 23:0 will cause the interrupt to > > be disabled: > > > > CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1); > > > > Writing all zeros to bits 23:0 will enable interrupts. > > > > CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, status_tag << 24); > > > > The tag value written to bits 31:24 does not affect the interrupt > > state. > > Yes, this is i'm talking about: > CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0x01000000) would lead to _disabled_ > interrupts. > Tested on bcm5701 & bcm5721.
Here's how it's done in Linux: static void tg3_disable_ints(struct tg3 *tp) { tw32(TG3PCI_MISC_HOST_CTRL, (tp->misc_host_ctrl | MISC_HOST_CTRL_MASK_PCI_INT)); tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000001); } static void tg3_enable_ints(struct tg3 *tp) { tp->irq_sync = 0; wmb(); tw32(TG3PCI_MISC_HOST_CTRL, (tp->misc_host_ctrl & ~MISC_HOST_CTRL_MASK_PCI_INT)); tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, (tp->last_tag << 24)); if (tp->tg3_flags2 & TG3_FLG2_1SHOT_MSI) tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, (tp->last_tag << 24)); tg3_cond_int(tp); } > > P.S. bcm5705 does not support tagged status mode, am i right? No, the 5705 should support tagged status mode, only the 5788 doesn't support it. The 5705 and 5788 are very closely related though. > -- > Oleg. _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"