Messages in this thread | | | Date | Thu, 26 Aug 2010 08:45:33 -0700 | From | Stephen Hemminger <> | Subject | Re: [PATCH] Gigabit Ethernet driver of Topcliff PCH |
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> +/** > + * pch_gbe_mac_init_rx_addrs - Initialize receive address's > + * @hw: Pointer to the HW structure > + * @mar_count: Receive address registers > + */ > +void pch_gbe_mac_init_rx_addrs(struct pch_gbe_hw *hw, u16 mar_count) > +{ > + u32 i; > + PCH_GBE_DEBUG("pch_gbe_mac_init_rx_addrs\n"); > + > + /* Setup the receive address */ > + pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); > + > + /* Zero out the other receive addresses */ > + for (i = 1; i < mar_count; i++) { > + iowrite32(0, &hw->reg->mac_adr[i].high); > + iowrite32(0, &hw->reg->mac_adr[i].low); > + } > + iowrite32(0xFFFE, &hw->reg->ADDR_MASK); > + /* wait busy */ > + while ((ioread32(&hw->reg->ADDR_MASK) & PCH_GBE_BUSY)) > + ; > +}
Use cpu_relax here to allow other hyper-thread to run. /* wait busy */ while ((ioread32(&hw->reg->ADDR_MASK) & PCH_GBE_BUSY)) cpu_relax();
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