QLogic ISP 2322 driver

2005-07-13 Thread Ravi Krishna
Hi, I am running FreeBSD 5.3 and have recently added QLogic ISP 2322 PCI FC-AL Adapter to the system to add a Fibre Channel shelf but I am not able to find a suitable driver for it. I tried using isp.ko which works for ISP 2312 for this device but landed up with this error: isp0: port 0x2100-0x

using segmentation to manage memory in FreeBSD

2005-03-08 Thread Ravi Krishna
Hi all! I would like to know if FreeBSD allows one to use segmentation on x86 to reduce the penalty of context switches. (please read on for details) Virtual memory on x86 can be managed by either segmentation or by paging. when using paging a context switch from one process to other all the TL

FreeBSD system call implementation

2004-12-15 Thread Ravi Krishna
Hi ! I am new to bsd internals and was looking at the implementation of syscall in sys/i386/i386/trap.c here its seems we get the handler for the syscall by if (p->p_sysent->sv_mask) code &= p->p_sysent->sv_mask; if (code >= p->p_sysent->sv_size) callp = &p