6cbc02a681
mpt.h: Add support for reading extended configuration pages. mpt_cam.c: Do a top level topology scan on the SAS controller. If any SATA device are discovered in this scan, send a passthrough FIS to set the write cache. This is controllable through the following tunable at boot: hw.mpt.enable_sata_wc: -1 = Do not configure, use the controller default 0 = Disable the write cache 1 = Enable the write cache The default is -1. This tunable is just a hack and may be deprecated in the future. Turning on the write cache alleviates the write performance problems with SATA that many people have observed. It is not recommend for those who value data reliability! I cannot stress this strongly enough. However, it is useful in certain circumstances, and it brings the performence in line with what a generic SATA controller running under the FreeBSD ATA driver provides (and the ATA driver has had the WC enabled by default for years). |
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| .. | ||
| mpilib | ||
| mpt_cam.c | ||
| mpt_cam.h | ||
| mpt_debug.c | ||
| mpt_pci.c | ||
| mpt_raid.c | ||
| mpt_raid.h | ||
| mpt_reg.h | ||
| mpt.c | ||
| mpt.h | ||