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In preparation for adding CQHCI crypto engine (inline encryption) support, add the code required to make mmc_core and mmc_block aware of inline encryption. Specifically: - Add a capability flag MMC_CAP2_CRYPTO to struct mmc_host. Drivers will set this if the host and driver support inline encryption. - Embed a blk_keyslot_manager in struct mmc_host. Drivers will initialize this (as a device-managed resource) if the host and driver support inline encryption. mmc_block registers this keyslot manager with the request_queue of any MMC card attached to the host. - Make mmc_block copy the crypto keyslot and crypto data unit number from struct request to struct mmc_request, so that drivers will have access to them. - If the MMC host is reset, reprogram all the keyslots to ensure that the software state stays in sync with the hardware state. Co-developed-by: Satya Tangirala <satyat@google.com> Signed-off-by: Satya Tangirala <satyat@google.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Satya Tangirala <satyat@google.com> Reviewed-and-tested-by: Peng Zhou <peng.zhou@mediatek.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20210126001456.382989-2-ebiggers@kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
92 lines
2.8 KiB
Plaintext
92 lines
2.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# MMC core configuration
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#
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config PWRSEQ_EMMC
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tristate "HW reset support for eMMC"
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default y
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depends on OF
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help
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This selects Hardware reset support aka pwrseq-emmc for eMMC
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devices. By default this option is set to y.
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This driver can also be built as a module. If so, the module
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will be called pwrseq_emmc.
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config PWRSEQ_SD8787
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tristate "HW reset support for SD8787 BT + Wifi module"
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depends on OF && (MWIFIEX || BT_MRVL_SDIO || LIBERTAS_SDIO)
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help
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This selects hardware reset support for the SD8787 BT + Wifi
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module. By default this option is set to n.
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This driver can also be built as a module. If so, the module
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will be called pwrseq_sd8787.
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config PWRSEQ_SIMPLE
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tristate "Simple HW reset support for MMC"
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default y
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depends on OF
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help
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This selects simple hardware reset support aka pwrseq-simple for MMC
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devices. By default this option is set to y.
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This driver can also be built as a module. If so, the module
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will be called pwrseq_simple.
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config MMC_BLOCK
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tristate "MMC block device driver"
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depends on BLOCK
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default y
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help
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Say Y here to enable the MMC block device driver support.
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This provides a block device driver, which you can use to
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mount the filesystem. Almost everyone wishing MMC support
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should say Y or M here.
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config MMC_BLOCK_MINORS
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int "Number of minors per block device"
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depends on MMC_BLOCK
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range 4 256
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default 8
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help
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Number of minors per block device. One is needed for every
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partition on the disk (plus one for the whole disk).
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Number of total MMC minors available is 256, so your number
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of supported block devices will be limited to 256 divided
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by this number.
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Default is 8 to be backwards compatible with previous
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hardwired device numbering.
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If unsure, say 8 here.
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config SDIO_UART
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tristate "SDIO UART/GPS class support"
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depends on TTY
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help
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SDIO function driver for SDIO cards that implements the UART
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class, as well as the GPS class which appears like a UART.
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config MMC_TEST
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tristate "MMC host test driver"
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help
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Development driver that performs a series of reads and writes
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to a memory card in order to expose certain well known bugs
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in host controllers. The tests are executed by writing to the
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"test" file in debugfs under each card. Note that whatever is
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on your card will be overwritten by these tests.
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This driver is only of interest to those developing or
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testing a host driver. Most people should say N here.
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config MMC_CRYPTO
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bool "MMC Crypto Engine Support"
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depends on BLK_INLINE_ENCRYPTION
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help
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Enable Crypto Engine Support in MMC.
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Enabling this makes it possible for the kernel to use the crypto
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capabilities of the MMC device (if present) to perform crypto
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operations on data being transferred to/from the device.
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