Ilpo Järvinen 867cae44f8 mfd: intel-m10-bmc: Manage access to MAX 10 fw handshake registers ... On some MAX 10 cards, the BMC firmware is not available to service handshake registers during secure update erase and write phases at normal speeds. This problem affects at least hwmon driver. When the MAX 10 hwmon driver tries to read the sensor values during a secure update, the reads are slowed down (e.g., reading all D5005 sensors takes ~24s which is magnitudes worse than the normal <0.02s). Manage access to the handshake registers using a rw semaphore and a FW state variable to prevent accesses during those secure update phases and return -EBUSY instead. If handshake_sys_reg_nranges == 0, don't update bwcfw_state as it is not used. This avoids the locking cost. Co-developed-by: Russ Weight <russell.h.weight@intel.com> Signed-off-by: Russ Weight <russell.h.weight@intel.com> Co-developed-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20230417092653.16487-5-ilpo.jarvinen@linux.intel.com		2023-06-15 09:19:36 +01:00
..
altera-cvp.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
altera-fpga2sdram.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
altera-freeze-bridge.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
altera-hps2fpga.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
altera-pr-ip-core-plat.c	fpga: fpga-mgr: altera-pr-ip: Simplify registration	2020-12-01 18:49:32 +01:00
altera-pr-ip-core.c	fpga: altera-pr-ip: fix unsigned comparison with less than zero	2022-06-10 15:48:23 +08:00
altera-ps-spi.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
dfl-afu-dma-region.c	fpga: dfl: afu: convert get_user_pages() --> pin_user_pages()	2020-06-18 18:12:06 -07:00
dfl-afu-error.c	fpga: dfl: afu: harden port enable logic	2021-03-24 11:15:04 -07:00
dfl-afu-main.c	fpga: dfl: afu: harden port enable logic	2021-03-24 11:15:04 -07:00
dfl-afu-region.c	fpga: dfl: more kernel-doc corrections	2023-01-28 23:33:43 +08:00
dfl-afu.h	fpga: dfl: more kernel-doc corrections	2023-01-28 23:33:43 +08:00
dfl-fme-br.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
dfl-fme-error.c	fpga: dfl: fme: add interrupt support for global error reporting	2020-07-06 21:35:42 -07:00
dfl-fme-main.c	fpga: dfl: fme: add interrupt support for global error reporting	2020-07-06 21:35:42 -07:00
dfl-fme-mgr.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
dfl-fme-perf.c	fpga: dfl: more kernel-doc corrections	2023-01-28 23:33:43 +08:00
dfl-fme-pr.c	fpga: dfl: kernel-doc corrections	2023-01-28 23:33:05 +08:00
dfl-fme-pr.h	fpga: dfl: more kernel-doc corrections	2023-01-28 23:33:43 +08:00
dfl-fme-region.c	fpga: region: Use standard dev_release for class driver	2021-11-28 14:02:41 -08:00
dfl-fme.h	fpga: dfl: fme: add performance reporting support	2020-04-28 15:49:28 +02:00
dfl-n3000-nios.c	fpga: fix spelling mistakes	2021-07-21 19:54:21 -07:00
dfl-pci.c	fpga: dfl-pci: Drop redundant pci_enable_pcie_error_reporting()	2023-03-10 16:39:44 +08:00
dfl.c	Driver core changes for 6.3-rc1	2023-02-24 12:58:55 -08:00
dfl.h	Char/Misc and other driver subsystem changes for 6.3-rc1	2023-02-24 12:47:33 -08:00
fpga-bridge.c	Char/Misc drivers for 6.4-rc1	2023-04-27 12:07:50 -07:00
fpga-mgr.c	driver core: class: remove module * from class_create()	2023-03-17 15:16:33 +01:00
fpga-region.c	driver core: class: remove module * from class_create()	2023-03-17 15:16:33 +01:00
ice40-spi.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
intel-m10-bmc-sec-update.c	mfd: intel-m10-bmc: Manage access to MAX 10 fw handshake registers	2023-06-15 09:19:36 +01:00
Kconfig	mfd: intel-m10-bmc: Split into core and spi specific parts	2023-01-27 10:35:00 +00:00
lattice-sysconfig-spi.c	fpga: lattice-sysconfig-spi: Add explicit include for of.h	2023-04-06 20:36:27 +02:00
lattice-sysconfig.c	fpga: lattice-sysconfig-spi: add Lattice sysCONFIG FPGA manager	2022-10-25 14:44:03 +08:00
lattice-sysconfig.h	fpga: lattice-sysconfig-spi: add Lattice sysCONFIG FPGA manager	2022-10-25 14:44:03 +08:00
machxo2-spi.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
Makefile	fpga: lattice-sysconfig-spi: add Lattice sysCONFIG FPGA manager	2022-10-25 14:44:03 +08:00
microchip-spi.c	fpga: microchip-spi: separate data frame write routine	2023-01-28 23:20:35 +08:00
of-fpga-region.c	fpga: fpga-region: fix kernel-doc formatting issues	2022-05-10 16:05:00 +08:00
socfpga-a10.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
socfpga.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
stratix10-soc.c	fpga: stratix10-soc: Fix return value check in s10_ops_write_init()	2022-12-30 10:38:29 +08:00
ts73xx-fpga.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
versal-fpga.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
xilinx-pr-decoupler.c	fpga: xilinx-pr-decoupler: Use readl wrapper instead of pure readl	2023-03-25 15:35:12 +08:00
xilinx-spi.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
zynq-fpga.c	fpga: zynq: Switch to use dev_err_probe() helper	2022-10-25 14:25:02 +08:00
zynqmp-fpga.c	fpga: zynqmp-fpga: Adds status interface	2023-03-09 17:33:19 +01:00