Author: gonzo
Date: Fri Jan 13 02:33:55 2012
New Revision: 230040
URL: http://svn.freebsd.org/changeset/base/230040
Log:
- Do not enumerate PCIe bus on CN56XX Pass 1 devices to avoid hard hang.
There is known issue with this hardware.
Submitted by: Andrew Duane <[email protected]>
Modified:
head/sys/contrib/octeon-sdk/cvmx-pcie.c
Modified: head/sys/contrib/octeon-sdk/cvmx-pcie.c
==============================================================================
--- head/sys/contrib/octeon-sdk/cvmx-pcie.c Fri Jan 13 00:38:35 2012
(r230039)
+++ head/sys/contrib/octeon-sdk/cvmx-pcie.c Fri Jan 13 02:33:55 2012
(r230040)
@@ -501,6 +501,12 @@ retry:
}
}
+ /* Make sure a CN56XX pass 1 isn't trying to do anything; errata for PASS
1 */
+ if (OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X)) {
+ cvmx_dprintf ("PCIe port %d: CN56XX_PASS_1, skipping\n", pcie_port);
+ return -1;
+ }
+
/* PCIe switch arbitration mode. '0' == fixed priority NPEI, PCIe0, then
PCIe1. '1' == round robin. */
npei_ctl_status.s.arb = 1;
/* Allow up to 0x20 config retries */
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