Commit fe044f69 authored by paul luse's avatar paul luse Committed by Jim Harris
Browse files

lib/idxd: add raw request for low level testing 



Provide an interface to allow the caller to provide a proprely
formatted descriptor.

Signed-off-by: default avatarpaul luse <paul.e.luse@intel.com>
Change-Id: I5c397761f556361040ec962d61169459150b6494
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12703


Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
parent 000ee408

include/spdk/idxd.h

+19 −0
Original line number Diff line number Diff line
@@ -333,6 +333,25 @@ int spdk_idxd_submit_decompress(struct spdk_idxd_io_channel *chan, 
				struct iovec *siov, uint32_t siovcnt,

				int flags, spdk_idxd_req_cb cb_fn, void *cb_arg);



/**

 * Build and submit an IDXD raw request.

 *

 * This function will process the supplied descriptor and then immediately submit

 * by writing to the proper device portal.

 *

 * \param chan IDXD channel to submit request.

 * \param desc proprely formatted IDXD descriptor.  Memory addresses should be physical.

 * The completion address will be filled in by the lower level library.

 * \param cb_fn Callback function which will be called when the request is complete.

 * \param cb_arg Opaque value which will be passed back as the arg parameter in

 * the completion callback.

 *

 * \return 0 on success, negative errno on failure.

 */

int spdk_idxd_submit_raw_desc(struct spdk_idxd_io_channel *chan,

			      struct idxd_hw_desc *desc,

			      spdk_idxd_req_cb cb_fn, void *cb_arg);



/**

 * Check for completed requests on an IDXD channel.

 *

lib/idxd/idxd.c

+32 −0
Original line number Diff line number Diff line
@@ -1274,6 +1274,38 @@ spdk_idxd_submit_decompress(struct spdk_idxd_io_channel *chan, 
	return -EINVAL;

}



int

spdk_idxd_submit_raw_desc(struct spdk_idxd_io_channel *chan,

			  struct idxd_hw_desc *_desc,

			  spdk_idxd_req_cb cb_fn, void *cb_arg)

{

	struct idxd_hw_desc *desc;

	struct idxd_ops *op;

	int rc, flags = 0;

	uint64_t comp_addr;



	assert(chan != NULL);

	assert(_desc != NULL);



	/* Common prep. */

	rc = _idxd_prep_command(chan, cb_fn, cb_arg, flags, &desc, &op);

	if (rc) {

		return rc;

	}



	/* Command specific. */

	flags = desc->flags;

	comp_addr = desc->completion_addr;

	memcpy(desc, _desc, sizeof(*desc));

	desc->flags |= flags;

	desc->completion_addr = comp_addr;



	/* Submit operation. */

	_submit_to_hw(chan, op);



	return 0;

}



static inline void

_dump_sw_error_reg(struct spdk_idxd_io_channel *chan)

{

lib/idxd/spdk_idxd.map

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
	spdk_idxd_submit_fill;

        spdk_idxd_submit_compress;

        spdk_idxd_submit_decompress;

	spdk_idxd_submit_raw_desc;

	spdk_idxd_process_events;

	spdk_idxd_get_channel;

	spdk_idxd_put_channel;