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| author | Eric Biggers <ebiggers@google.com> | 2021-01-25 16:14:52 -0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2021-02-01 12:02:33 +0100 |
| commit | 0a0c866f377ebea6ed5b65942cf1269651c21072 (patch) | |
| tree | 60dbfb78ab0daffb006653703625d1d3bd1abf5b /drivers/mmc/host/cqhci.h | |
| parent | 1e80709bdbfc1e1f3cac0ba8ed9a58f5789bcf51 (diff) | |
| download | linux-0a0c866f377ebea6ed5b65942cf1269651c21072.tar.gz | |
mmc: cqhci: add cqhci_host_ops::program_key
On Snapdragon SoCs, the Linux kernel isn't permitted to directly access
the standard CQHCI crypto configuration registers. Instead, programming
and evicting keys must be done through vendor-specific SMC calls.
To support this hardware, add a ->program_key() method to
'struct cqhci_host_ops'. This allows overriding the standard CQHCI
crypto key programming / eviction procedure.
This is inspired by the corresponding UFS crypto support, which uses
these same SMC calls. See commit 1bc726e26ef3 ("scsi: ufs: Add
program_key() variant op").
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/20210126001456.382989-6-ebiggers@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/cqhci.h')
| -rw-r--r-- | drivers/mmc/host/cqhci.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mmc/host/cqhci.h b/drivers/mmc/host/cqhci.h index 8e9e8f5db5bc..ba9387ed90eb 100644 --- a/drivers/mmc/host/cqhci.h +++ b/drivers/mmc/host/cqhci.h @@ -286,6 +286,10 @@ struct cqhci_host_ops { u64 *data); void (*pre_enable)(struct mmc_host *mmc); void (*post_disable)(struct mmc_host *mmc); +#ifdef CONFIG_MMC_CRYPTO + int (*program_key)(struct cqhci_host *cq_host, + const union cqhci_crypto_cfg_entry *cfg, int slot); +#endif }; static inline void cqhci_writel(struct cqhci_host *host, u32 val, int reg) |