diff options
Diffstat (limited to 'drivers/crypto/amlogic/amlogic-gxl.h')
| -rw-r--r-- | drivers/crypto/amlogic/amlogic-gxl.h | 51 |
1 files changed, 21 insertions, 30 deletions
diff --git a/drivers/crypto/amlogic/amlogic-gxl.h b/drivers/crypto/amlogic/amlogic-gxl.h index fd9192b4050b..b7f2de91ab76 100644 --- a/drivers/crypto/amlogic/amlogic-gxl.h +++ b/drivers/crypto/amlogic/amlogic-gxl.h @@ -26,43 +26,34 @@ #define MAXDESC 64 +#define DESC_LAST BIT(18) +#define DESC_ENCRYPTION BIT(28) +#define DESC_OWN BIT(31) + /* * struct meson_desc - Descriptor for DMA operations * Note that without datasheet, some are unknown - * @len: length of data to operate - * @irq: Ignored by hardware - * @eoc: End of descriptor - * @loop: Unknown - * @mode: Type of algorithm (AES, SHA) - * @begin: Unknown - * @end: Unknown - * @op_mode: Blockmode (CBC, ECB) - * @block: Unknown - * @error: Unknown - * @owner: owner of the descriptor, 1 own by HW + * @t_status: Descriptor of the cipher operation (see description below) * @t_src: Physical address of data to read * @t_dst: Physical address of data to write + * t_status is segmented like this: + * @len: 0-16 length of data to operate + * @irq: 17 Ignored by hardware + * @eoc: 18 End means the descriptor is the last + * @loop: 19 Unknown + * @mode: 20-23 Type of algorithm (AES, SHA) + * @begin: 24 Unknown + * @end: 25 Unknown + * @op_mode: 26-27 Blockmode (CBC, ECB) + * @enc: 28 0 means decryption, 1 is for encryption + * @block: 29 Unknown + * @error: 30 Unknown + * @owner: 31 owner of the descriptor, 1 own by HW */ struct meson_desc { - union { - u32 t_status; - struct { - u32 len:17; - u32 irq:1; - u32 eoc:1; - u32 loop:1; - u32 mode:4; - u32 begin:1; - u32 end:1; - u32 op_mode:2; - u32 enc:1; - u32 block:1; - u32 error:1; - u32 owner:1; - }; - }; - u32 t_src; - u32 t_dst; + __le32 t_status; + __le32 t_src; + __le32 t_dst; }; /* |