kernel/linux.git/include/linux/mfd/intel-m10-bmc.h, branch v6.3.2

fpga: m10bmc-sec: Add support for N6000

2023-01-30T08:14:02+00:00

Add support for PMCI-based flash access path and N6000 sec update support. Access to flash staging area is different for N6000 from that of the SPI interfaced counterparts. Introduce intel_m10bmc_flash_bulk_ops to allow interface specific differentiations for the flash access path for sec update and make m10bmc_sec_read/write() in sec update driver to use the new operations. The .flash_mutex serializes read/read. Flash update (erase+write) must use ->lock/unlock_write() to prevent reads during update (reads would timeout on setting flash MUX as BMC will prevent it). Create a type specific RSU status reg handler for N6000 because the field has moved from doorbell to auth result register. If a failure is detected while altering the flash MUX, it seems safer to try to set it back and doesn't seem harmful. Likely there are enough troubles in that case anyway so setting it back fails too (which is harmless sans the small extra delay) or just confirms that the value wasn't changed. Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Co-developed-by: Russ Weight Signed-off-by: Russ Weight Acked-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-12-ilpo.jarvinen@linux.intel.com

mfd: intel-m10-bmc: Add PMCI driver

2023-01-27T10:47:11+00:00

Add the mfd driver for the Platform Management Component Interface (PMCI) based interface of Intel MAX10 BMC controller. PMCI is a software-visible interface, connected to card BMC which provided the basic functionality of read/write BMC register. The access to the register is done indirectly via a hardware controller/bridge that handles read/write/clear commands and acknowledgments for the commands. Previously, intel-m10-bmc provided sysfs under /sys/bus/spi/devices/... which is generalized in this change because not all MAX10 BMC appear under SPI anymore. Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Co-developed-by: Russ Weight Signed-off-by: Russ Weight Co-developed-by: Matthew Gerlach Signed-off-by: Matthew Gerlach Reviewed-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-11-ilpo.jarvinen@linux.intel.com

fpga: m10bmc-sec: Make rsu status type specific

2023-01-27T10:42:29+00:00

The rsu status field moves from the doorbell register to the auth result register in the PMCI implementation of the MAX10 BMC. In order to prepare for that, refactor the sec update driver code to have a type specific ops that provides ->rsu_status(). Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Co-developed-by: Russ Weight Signed-off-by: Russ Weight Signed-off-by: Ilpo Järvinen Acked-by: Xu Yilun Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-10-ilpo.jarvinen@linux.intel.com

mfd: intel-m10-bmc: Prefix register defines with M10BMC_N3000

2023-01-27T10:37:51+00:00

Prefix the M10BMC defines register defines with M10BMC_N3000 to make it more obvious these are related to some board type. All current non-N3000 board types have the same layout so they'll be reused. The less generic makes it more obvious they're not meant for the generic/interface agnostic code. Reviewed-by: Russ Weight Reviewed-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-8-ilpo.jarvinen@linux.intel.com

mfd: intel-m10-bmc: Support multiple CSR register layouts

2023-01-27T10:36:29+00:00

There are different addresses for the MAX10 CSR registers. Introducing a new data structure m10bmc_csr_map for the register definition of MAX10 CSR. Provide the csr_map for SPI. Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Reviewed-by: Russ Weight Reviewed-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-6-ilpo.jarvinen@linux.intel.com

mfd: intel-m10-bmc: Split into core and spi specific parts

2023-01-27T10:35:00+00:00

Split the common code from intel-m10-bmc driver into intel-m10-bmc-core and move the SPI bus parts into an interface specific file. intel-m10-bmc-core becomes the core MFD functions which can support multiple bus interface like SPI bus. Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Reviewed-by: Russ Weight Acked-by: Guenter Roeck # hwmon Reviewed-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-5-ilpo.jarvinen@linux.intel.com

mfd: intel-m10-bmc: Create m10bmc_platform_info for type specific info

2023-01-27T10:28:15+00:00

BMC type specific info is currently set by a switch/case block. The size of this info is expected to grow as more dev types and features are added which would have made the switch block bloaty. Store type specific info into struct and place them into .driver_data instead because it makes things a bit cleaner. The m10bmc_type enum can be dropped as the differentiation is now fully handled by the platform info. The info member of struct intel_m10bmc that is added here is not used yet in this change but its addition logically still belongs to this change. The CSR map change that comes after this change needs to have the info member. Reviewed-by: Russ Weight Reviewed-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-3-ilpo.jarvinen@linux.intel.com

mfd: intel-m10-bmc: Add missing includes to header

2023-01-27T10:27:40+00:00

linux/mfd/intel-m10-bmc.h is using: - pr_err(), thus include also linux/dev_printk.h - FIELD_GET(), this include also linux/bitfield.h - GENMASK(), thus include also linux/bits.h Signed-off-by: Ilpo Järvinen Reviewed-by: Russ Weight Reviewed-by: Xu Yilun Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-2-ilpo.jarvinen@linux.intel.com

mfd: intel-m10-bmc: Add support for MAX10 BMC Secure Updates

2021-04-14T15:06:57+00:00

Add macros and definitions required by the MAX10 BMC Secure Update driver. Signed-off-by: Russ Weight Signed-off-by: Lee Jones

mfd: intel-m10-bmc: Add access table configuration to the regmap

2021-04-14T15:03:41+00:00

This patch adds access tables to the MAX 10 BMC regmap. This prevents the host from accessing the unwanted I/O space. It also filters out the invalid outputs when reading the regmap debugfs interface. Signed-off-by: Matthew Gerlach Signed-off-by: Xu Yilun Reviewed-by: Tom Rix Signed-off-by: Lee Jones