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| author | Matthew Gerlach <matthew.gerlach@linux.intel.com> | 2021-03-10 23:55:47 +0800 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2021-04-14 16:03:41 +0100 |
| commit | 8169f74ca6f318f4187536050d2f5408fce9c264 (patch) | |
| tree | 2dd05287ce271b5cb457690362ec60671292c918 /drivers/mfd | |
| parent | 5893f4d1f43036664010e3ae1d3f7a98b2165a5d (diff) | |
| download | linux-8169f74ca6f318f4187536050d2f5408fce9c264.tar.gz linux-8169f74ca6f318f4187536050d2f5408fce9c264.tar.bz2 linux-8169f74ca6f318f4187536050d2f5408fce9c264.zip | |
mfd: intel-m10-bmc: Add access table configuration to the regmap
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 <matthew.gerlach@linux.intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/intel-m10-bmc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/mfd/intel-m10-bmc.c b/drivers/mfd/intel-m10-bmc.c index 90d0448a5500..1161933cbd4a 100644 --- a/drivers/mfd/intel-m10-bmc.c +++ b/drivers/mfd/intel-m10-bmc.c @@ -23,10 +23,23 @@ static struct mfd_cell m10bmc_pacn3000_subdevs[] = { { .name = "n3000bmc-secure" }, }; +static const struct regmap_range m10bmc_regmap_range[] = { + regmap_reg_range(M10BMC_LEGACY_BUILD_VER, M10BMC_LEGACY_BUILD_VER), + regmap_reg_range(M10BMC_SYS_BASE, M10BMC_SYS_END), + regmap_reg_range(M10BMC_FLASH_BASE, M10BMC_FLASH_END), +}; + +static const struct regmap_access_table m10bmc_access_table = { + .yes_ranges = m10bmc_regmap_range, + .n_yes_ranges = ARRAY_SIZE(m10bmc_regmap_range), +}; + static struct regmap_config intel_m10bmc_regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, + .wr_table = &m10bmc_access_table, + .rd_table = &m10bmc_access_table, .max_register = M10BMC_MEM_END, }; |