soc: hisilicon: kunpeng_hccs: Support the platform with PCC type3 and interrupt ack

Support the platform with PCC type3 and interrupt ack. And a version
specific structure is introduced to handle the difference between the
device in the code.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

soc: hisilicon: kunpeng_hccs: Remove an unused blank line

Remove an unused blank line.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

soc: hisilicon: kunpeng_hccs: Add failure log for no _CRS method

Driver gets the PCC channel id by using the PCC GAS in _CRS.
But, currently, if the firmware has no _CRS method on platform, there
is not any failure log. So this patch adds the log for this.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

soc: hisilicon: kunpeng_hccs: Fix some incorrect format strings

Fix some incorrect format strings.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

soc/hisilicon: kunpeng_hccs: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Link: https://lore.kernel.org/r/20230925095532.1984344-10-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

soc: kunpeng_hccs: Migrate to use generic PCC shmem related macros

Use the newly defined common and generic PCC shared memory region
related macros in this driver to replace the locally defined ones.

Cc: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Huisong Li <lihuisong@huawei.com>
Link: https://lore.kernel.org/r/20230927-pcc_defines-v2-4-0b8ffeaef2e5@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

soc: kunpeng_hccs: fix some sparse warnings about incorrect type

This patch fixes some sparse warnings about incorrect type.
The address about PCC communication space should use '__iomem' tag.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308151142.dH5Muhva-lkp@intel.com/
Fixes: 886bdf9c883b ("soc: hisilicon: Support HCCS driver on Kunpeng SoC")
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://lore.kernel.org/r/20230816073706.33297-1-lihuisong@huawei.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

soc: kunpeng_hccs: fix size_t format string

Printing a size_t using the %lu format string causes a warning on
architectures that define the type as 'unsigned int':

In file included from include/linux/device.h:15,
from include/linux/acpi.h:14,
from drivers/soc/hisilicon/kunpeng_hccs.c:25:
drivers/soc/hisilicon/kunpeng_hccs.c: In function 'hccs_get_bd_info':
drivers/soc/hisilicon/kunpeng_hccs.c:441:25: error: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]

Use the correct %zu format instead.

Fixes: 886bdf9c883bc ("soc: hisilicon: Support HCCS driver on Kunpeng SoC")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

soc: hisilicon: add sysfs entry to query information of HCCS

This patch creates chip, die and port directory based on the actual
hardware implementation of platform. Some sysfs entries under these
directories are created to query the health status and port information
of HCCS.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

soc: hisilicon: Support HCCS driver on Kunpeng SoC

The Huawei Cache Coherence System (HCCS) is a multi-chip interconnection
bus protocol. This driver is aimed to support some features about HCCS on
Kunpeng SoC, like, querying the health status of HCCS.

This patch adds the probing of HCCS driver, and obtains all HCCS port
information by the dimension of chip and die on platform.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>