src-test2/sys/dev/twe, branch release/5.2.0

After extensive QA cycles at 3ware, bring the driver in-line with all the

2003-12-02T07:57:20Z

issues which they found and asked to be changed so 3ware can offcially support the driver. Summary of the most significant changes: - TWE_OVERRIDE is no longer supported - If twe_getparam failed, bogus data would be returned to the caller - Cache the device unit in the twe_drive structure to aid debugging - Add the 3ware driver version. - Proper return error codes for many functions. - Track the minimum queue length statistics - 4.x compat: use the cached unit number from the twe_drive structure instead of the the cached si_drv2. 3ware found that after many loads and unloads that si_drv2 became corrupted. This did not happen in -current. Submitted by: Vinod Kashyap (with modifications by me) Approved by: re (rwatson)

Correct the structure packing.

2003-11-06T08:09:29Z

Reported by: Vinod Kashyap

Prefer new location of pci include files (which have only been in the

2003-08-22T07:08:17Z

tree for two or more years now), except in a few places where there's code to be compatible with older versions of FreeBSD.

Don't tsleep on NULL

2003-08-19T12:22:17Z

Oops.. Some debugging code snuck in here.

2003-08-12T22:33:49Z

Requeue the request if the controller is busy.

Fix the busdma support in twe to support EINPROGRESS and enable it for

2003-08-12T06:38:55Z

use with PAE kernels.

Properly support the 3ware generic API.

2003-08-05T19:55:21Z

- Build SGL's for ATA_PASSTHROUGH commands - Fallback to using the sgl_offset when the opcode is unknown for building SGL's/ - Add ioctl calls for adding and removing units. - Define previously undefined AEN's - Allocate memory for the ioctl payload in multiples of 512bytes. MFC after: 1 week

Mega busdma API commit.

2003-07-01T15:52:06Z

Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg. Lockfunc allows a driver to provide a function for managing its locking semantics while using busdma. At the moment, this is used for the asynchronous busdma_swi and callback mechanism. Two lockfunc implementations are provided: busdma_lock_mutex() performs standard mutex operations on the mutex that is specified from lockfuncarg. dftl_lock() is a panic implementation and is defaulted to when NULL, NULL are passed to bus_dma_tag_create(). The only time that NULL, NULL should ever be used is when the driver ensures that bus_dmamap_load() will not be deferred. Drivers that do not provide their own locking can pass busdma_lock_mutex,&Giant args in order to preserve the former behaviour. sparc64 and powerpc do not provide real busdma_swi functions, so this is largely a noop on those platforms. The busdma_swi on is64 is not properly locked yet, so warnings will be emitted on this platform when busdma callback deferrals happen. If anyone gets panics or warnings from dflt_lock() being called, please let me know right away. Reviewed by: tmm, gibbs

Use bioq_flush() to drain a bio queue with a specific error code.

2003-04-01T15:06:26Z

Retain the mistake of not updating the devstat API for now. Spell bioq_disksort() consistently with the remaining bioq_*(). #include where this is more appropriate.

Fix a bug I introduced by overlooking the fact that "unit number" can

2003-03-15T12:16:33Z

be one of several things in this driver. Spotted & Tested by: alfred