################################################################################
#
# Intel(R) 10GbE PCI Express Linux Network Driver
# Copyright(c) 1999 - 2017 Intel Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
# more details.
#
# The full GNU General Public License is included in this distribution in
# the file called "COPYING".
#
# Contact Information:
# Linux NICS <linux.nics@intel.com>
# e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
# Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
# Silicom, Ltd
################################################################################

MOD_VER=5.2.0.41

PRDPATH_UTIL=/bin
TARGET_UTIL=bpctl_util
OBJS_UTIL = bp_util.o

ifneq ($(KERNELRELEASE),)
# kbuild part of makefile
#
# Makefile for the Intel(R) 10GbE PCI Express Linux Network Driver
#

obj-$(CONFIG_BPCTL_MOD) += bpctl_mod.o

define bpctl_mod-y
	bp_mod.o
endef
bpctl_mod-y := $(strip ${bpctl_mod-y})


else	# ifneq($(KERNELRELEASE),)
# normal makefile

DRIVER := bpctl_mod

ifeq (,$(wildcard common.mk))
  $(error Cannot find common.mk build rules)
else
  include common.mk
endif

# Check that kernel version is at least 2.6.0, since we don't support 2.4.x
# kernels with the BPCTL driver. We can't use minimum_kver_check since SLES 10
# SP4's Make has a bug which causes $(eval) inside an ifeq conditional to error
# out. This was fixed in Make 3.81, but SLES 10 SP4 does not have a fix for
# this yet.
ifeq (0,$(shell [ ${KVER_CODE} -lt $(call get_kvercode,2,6,0) ]; echo "$?"))
  $(warning *** Aborting the build.)
  $(error This driver is not supported on kernel versions older than 2.6.0)
endif

######################
# Kernel Build Macro #
######################

# customized kernelbuild function
#
# ${1} is the kernel build target
# ${2} may contain extra rules to pass to kernelbuild macro
#
# We customize the kernelbuild target in order to provide our hack to disable
# CONFIG_PTP_1588_CLOCK support should -DNO_PTP_SUPPORT be defined in the extra
# cflags given on the command line.
devkernelbuild = $(call kernelbuild,$(if $(filter -DNO_PTP_SUPPORT,${EXTRA_CFLAGS}),CONFIG_PTP_1588_CLOCK=n) ${2},${1})

###############
# Build rules #
###############

# Standard compilation, with regular output
default: $(TARGET_UTIL)
	@+$(call devkernelbuild,modules)

# Noisy output, for extra debugging
noisy:
	@+$(call devkernelbuild,modules,V=1)

# Silence any output generated
silent:
	@+$(call devkernelbuild,modules,>/dev/null)

# Enable higher warning level
checkwarnings: clean
	@+$(call devkernelbuild,modules,W=1)

# Run sparse static analyzer
sparse: clean
	@+$(call devkernelbuild,modules,C=2 CF="-D__CHECK_ENDIAN__ -Wbitwise -Wcontext")

# Run coccicheck static analyzer
ccc: clean
	@+$(call devkernelbuild,modules,coccicheck MODE=report))


# Clean the module subdirectories
clean:
	@+$(call devkernelbuild,clean)
	@-rm -rf *.ko
	rm -rf $(OBJS_UTIL) $(TARGET_UTIL)

# Install the modules
install: default
	@echo "Installing modules..."
	@+$(call devkernelbuild,modules_install)
	@echo "Running depmod..."
	@$(call cmd_depmod)
	mkdir -p $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)
	install $(TARGET_UTIL) $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)
	install bpctl_start $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)
	install bpctl_stop $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)	
	
$(TARGET_UTIL): $(OBJS_UTIL)
	$(CC) $(OBJS_UTIL) -g -Wall -o $(TARGET_UTIL) 

uninstall:
	rm -f ${INSTALL_MOD_PATH}/lib/modules/${KVER}/${INSTALL_MOD_DIR}/${DRIVER}.ko;
	$(call cmd_depmod)
	if [ -e $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)/$(TARGET_UTIL) ] ; then \
	    rm -f $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)/$(TARGET_UTIL) ; \
	fi
	if [ -e $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)/bpctl_start ] ; then \
	    rm -f $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)/bpctl_start ; \
	fi
	if [ -e $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)/bpctl_stop ] ; then \
	    rm -f $(INSTALL_MOD_PATH)$(PRDPATH_UTIL)/bpctl_stop ; \
	fi	

########
# Help #
########
help:
	@echo 'Cleaning targets:'
	@echo '  clean               - Clean files generated by kernel module build'
	@echo 'Build targets:'
	@echo '  default             - Build module(s) with standard verbosity'
	@echo '  noisy               - Build module(s) with V=1 verbosity -- very noisy'
	@echo '  silent              - Build module(s), squelching all output'
	@echo 'Static Analysis:'
	@echo '  checkwarnings       - Clean, then build module(s) with W=1 warnings enabled'
	@echo '  sparse              - Clean, then check module(s) using sparse'
	@echo '  ccc                 - Clean, then check module(s) using coccicheck'
	@echo 'Other targets:'
	@echo '  install             - Build then install the module(s)'
	@echo '  uninstall           - Uninstall the module(s)'
	@echo '  help                - Display this help message'
	@echo 'Variables:'
	@echo '  LINUX_VERSION       - Debug tool to force kernel LINUX_VERSION_CODE. Use at your own risk.'
	@echo '  W=N                 - Kernel variable for setting warning levels'
	@echo '  V=N                 - Kernel variable for setting output verbosity'
	@echo '  INSTALL_MOD_PATH    - Add prefix for the module installation path'
	@echo ' Other variables may be available for tuning make process, see'
	@echo ' Kernel Kbuild documentation for more information'

.PHONY: default noisy clean silent sparse ccc install uninstall help

endif	# ifneq($(KERNELRELEASE),)