mmc: cqhci: eMMC JEDEC v5.2 crypto spec addition

Add crypto capability registers and structs defined in v5.2 of
JEDEC eMMC specification in prepration to add support for inline
encryption to eMMC controllers.

Change-Id: I4cd9d73a291033b885a66a209d097c768fbff921
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>

drivers/mmc/host/cmdq_hci.h

@@ -12,12 +12,16 @@
 #ifndef LINUX_MMC_CQ_HCI_H
 #define LINUX_MMC_CQ_HCI_H
 #include <linux/mmc/core.h>
+#include <linux/platform_device.h>
 
 /* registers */
 /* version */
 #define CQVER		0x00
 /* capabilities */
 #define CQCAP		0x04
+#define CQ_CAP_CS	(1 << 28)
+#define CQ_CCAP		0x100
+#define CQ_CRYPTOCAP	0x104
 /* configuration */
 #define CQCFG		0x08
 #define CQ_DCMD		0x00001000
@@ -151,6 +155,62 @@
 #define CQ_VENDOR_CFG	0x100
 #define CMDQ_SEND_STATUS_TRIGGER (1 << 31)
 
+/* CCAP - Crypto Capability 100h */
+union cmdq_crypto_capabilities {
+	__le32 reg_val;
+	struct {
+		u8 num_crypto_cap;
+		u8 config_count;
+		u8 reserved;
+		u8 config_array_ptr;
+	};
+};
+
+enum cmdq_crypto_key_size {
+	CMDQ_CRYPTO_KEY_SIZE_INVALID	= 0x0,
+	CMDQ_CRYPTO_KEY_SIZE_128	= 0x1,
+	CMDQ_CRYPTO_KEY_SIZE_192	= 0x2,
+	CMDQ_CRYPTO_KEY_SIZE_256	= 0x3,
+	CMDQ_CRYPTO_KEY_SIZE_512	= 0x4,
+};
+
+enum cmdq_crypto_alg {
+	CMDQ_CRYPTO_ALG_AES_XTS		= 0x0,
+	CMDQ_CRYPTO_ALG_BITLOCKER_AES_CBC	= 0x1,
+	CMDQ_CRYPTO_ALG_AES_ECB		= 0x2,
+	CMDQ_CRYPTO_ALG_ESSIV_AES_CBC		= 0x3,
+};
+
+/* x-CRYPTOCAP - Crypto Capability X */
+union cmdq_crypto_cap_entry {
+	__le32 reg_val;
+	struct {
+		u8 algorithm_id;
+		u8 sdus_mask; /* Supported data unit size mask */
+		u8 key_size;
+		u8 reserved;
+	};
+};
+
+#define CMDQ_CRYPTO_CONFIGURATION_ENABLE (1 << 7)
+#define CMDQ_CRYPTO_KEY_MAX_SIZE 64
+
+/* x-CRYPTOCFG - Crypto Configuration X */
+union cmdq_crypto_cfg_entry {
+	__le32 reg_val[32];
+	struct {
+		u8 crypto_key[CMDQ_CRYPTO_KEY_MAX_SIZE];
+		u8 data_unit_size;
+		u8 crypto_cap_idx;
+		u8 reserved_1;
+		u8 config_enable;
+		u8 reserved_multi_host;
+		u8 reserved_2;
+		u8 vsb[2];
+		u8 reserved_3[56];
+	};
+};
+
 struct task_history {
 	u64 task;
 	bool is_dcmd;