scsi: leapraid: Add new SCSI driver

The LeapRAID driver provides support for LeapRAID PCIe RAID controllers,
enabling communication between the host operating system, firmware, and
hardware for efficient storage management.

The driver is organized into several logical modules, each with a clear
responsibility:

leapraid_os.c: Integrates with the Linux SCSI subsystem, handling host
template callbacks, PCIe device probing, and initialization.

leapraid_func.c: Contains low-level routines for firmware/hardware
interaction, interrupt handling, and reset logic.

leapraid_app.c: Provides the ioctl interface for user-space tools.

leapraid_transport.c: Manages interactions with the SCSI transport
layer for SAS PHYs and ports.

leapraid_func.h: Contains internal definitions shared among driver
modules.

leapraid.h: Contains low-level hardware definitions for
driver/firmware interaction.

The leapraid_probe() function orchestrates the setup: it allocates the
adapter structure and SCSI host, configures hardware interfaces, and
registers it with the SCSI mid-layer. Following registration,
scsi_scan_host() is invoked to initiate device discovery, with firmware
reporting devices via interrupt-driven events.

This initial commit provides the necessary infrastructure for
subsequent development of full I/O path handling, error recovery,
and advanced management features.

Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Signed-off-by: Dongdong Hao <doubled@leap-io-kernel.com>
Link: https://patch.msgid.link/0cbc6245aabdc6e8c90587675e76ba316c5b549e.1785823793.git.doubled@leap-io-kernel.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

0 files changed, 0 insertions, 0 deletions