Date: Sat, 25 Oct 2008 03:06:47 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r184243 - head/sys/pci Message-ID: <200810250306.m9P36l58008770@svn.freebsd.org>
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Author: yongari Date: Sat Oct 25 03:06:47 2008 New Revision: 184243 URL: http://svn.freebsd.org/changeset/base/184243 Log: After sending stop command to MAC, give hardware chance to drain active DMA operation. Modified: head/sys/pci/if_rl.c Modified: head/sys/pci/if_rl.c ============================================================================== --- head/sys/pci/if_rl.c Sat Oct 25 02:52:06 2008 (r184242) +++ head/sys/pci/if_rl.c Sat Oct 25 03:06:47 2008 (r184243) @@ -1834,6 +1834,14 @@ rl_stop(struct rl_softc *sc) CSR_WRITE_1(sc, RL_COMMAND, 0x00); CSR_WRITE_2(sc, RL_IMR, 0x0000); + for (i = 0; i < RL_TIMEOUT; i++) { + DELAY(10); + if ((CSR_READ_1(sc, RL_COMMAND) & + (RL_CMD_RX_ENB | RL_CMD_TX_ENB)) == 0) + break; + } + if (i == RL_TIMEOUT) + device_printf(sc->rl_dev, "Unable to stop Tx/Rx MAC\n"); /* * Free the TX list buffers.
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