Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / cris / include / arch-v32 / arch / cryptocop.h

diff --git a/kernel/arch/cris/include/arch-v32/arch/cryptocop.h b/kernel/arch/cris/include/arch-v32/arch/cryptocop.h
new file mode 100644 (file)
index 0000000..716e434
--- /dev/null
+++ b/kernel/arch/cris/include/arch-v32/arch/cryptocop.h
@@ -0,0 +1,158 @@
+/*
+ * The device /dev/cryptocop is accessible using this driver using
+ * CRYPTOCOP_MAJOR (254) and minor number 0.
+ */
+#ifndef CRYPTOCOP_H
+#define CRYPTOCOP_H
+
+#include <uapi/arch-v32/arch/cryptocop.h>
+
+
+/********** The API to use from inside the kernel. ************/
+
+#include <arch/hwregs/dma.h>
+
+typedef enum {
+       cryptocop_alg_csum = 0,
+       cryptocop_alg_mem2mem,
+       cryptocop_alg_md5,
+       cryptocop_alg_sha1,
+       cryptocop_alg_des,
+       cryptocop_alg_3des,
+       cryptocop_alg_aes,
+       cryptocop_no_alg,
+} cryptocop_algorithm;
+
+typedef u8 cryptocop_tfrm_id;
+
+
+struct cryptocop_operation;
+
+typedef void (cryptocop_callback)(struct cryptocop_operation*, void*);
+
+struct cryptocop_transform_init {
+       cryptocop_algorithm    alg;
+       /* Keydata for ciphers. */
+       unsigned char          key[CRYPTOCOP_MAX_KEY_LENGTH];
+       unsigned int           keylen;
+       cryptocop_cipher_mode  cipher_mode;
+       cryptocop_3des_mode    tdes_mode;
+       cryptocop_csum_type    csum_mode; /* cryptocop_csum_none is not allowed when alg==cryptocop_alg_csum */
+
+       cryptocop_tfrm_id tid; /* Locally unique in session; assigned by user, checked by driver. */
+       struct cryptocop_transform_init *next;
+};
+
+
+typedef enum {
+       cryptocop_source_dma = 0,
+       cryptocop_source_des,
+       cryptocop_source_3des,
+       cryptocop_source_aes,
+       cryptocop_source_md5,
+       cryptocop_source_sha1,
+       cryptocop_source_csum,
+       cryptocop_source_none,
+} cryptocop_source;
+
+
+struct cryptocop_desc_cfg {
+       cryptocop_tfrm_id tid;
+       cryptocop_source src;
+       unsigned int last:1; /* Last use of this transform in the operation.  Will push outdata when encountered. */
+       struct cryptocop_desc_cfg *next;
+};
+
+struct cryptocop_desc {
+       size_t length;
+       struct cryptocop_desc_cfg *cfg;
+       struct cryptocop_desc *next;
+};
+
+
+/* Flags for cryptocop_tfrm_cfg */
+#define CRYPTOCOP_NO_FLAG     (0x00)
+#define CRYPTOCOP_ENCRYPT     (0x01)
+#define CRYPTOCOP_DECRYPT     (0x02)
+#define CRYPTOCOP_EXPLICIT_IV (0x04)
+
+struct cryptocop_tfrm_cfg {
+       cryptocop_tfrm_id tid;
+
+       unsigned int flags; /* DECRYPT, ENCRYPT, EXPLICIT_IV */
+
+       /* CBC initialisation vector for cihers. */
+       u8 iv[CRYPTOCOP_MAX_IV_LENGTH];
+
+       /* The position in output where to write the transform output.  The order
+          in which the driver writes the output is unspecified, hence if several
+          transforms write on the same positions in the output the result is
+          unspecified. */
+       size_t inject_ix;
+
+       struct cryptocop_tfrm_cfg *next;
+};
+
+
+
+struct cryptocop_dma_list_operation{
+       /* The consumer can provide DMA lists to send to the co-processor.  'use_dmalists' in
+          struct cryptocop_operation must be set for the driver to use them.  outlist,
+          out_data_buf, inlist and in_data_buf must all be physical addresses since they will
+          be loaded to DMA . */
+       dma_descr_data *outlist; /* Out from memory to the co-processor. */
+       char           *out_data_buf;
+       dma_descr_data *inlist; /* In from the co-processor to memory. */
+       char           *in_data_buf;
+
+       cryptocop_3des_mode tdes_mode;
+       cryptocop_csum_type csum_mode;
+};
+
+
+struct cryptocop_tfrm_operation{
+       /* Operation configuration, if not 'use_dmalists' is set. */
+       struct cryptocop_tfrm_cfg *tfrm_cfg;
+       struct cryptocop_desc *desc;
+
+       struct iovec *indata;
+       size_t incount;
+       size_t inlen; /* Total inlength. */
+
+       struct iovec *outdata;
+       size_t outcount;
+       size_t outlen; /* Total outlength. */
+};
+
+
+struct cryptocop_operation {
+       cryptocop_callback *cb;
+       void *cb_data;
+
+       cryptocop_session_id sid;
+
+       /* The status of the operation when returned to consumer. */
+       int operation_status; /* 0, -EAGAIN */
+
+       /* Flags */
+       unsigned int use_dmalists:1;  /* Use outlist and inlist instead of the desc/tfrm_cfg configuration. */
+       unsigned int in_interrupt:1;  /* Set if inserting job from interrupt context. */
+       unsigned int fast_callback:1; /* Set if fast callback wanted, i.e. from interrupt context. */
+
+       union{
+               struct cryptocop_dma_list_operation list_op;
+               struct cryptocop_tfrm_operation tfrm_op;
+       };
+};
+
+
+int cryptocop_new_session(cryptocop_session_id *sid, struct cryptocop_transform_init *tinit, int alloc_flag);
+int cryptocop_free_session(cryptocop_session_id sid);
+
+int cryptocop_job_queue_insert_csum(struct cryptocop_operation *operation);
+
+int cryptocop_job_queue_insert_crypto(struct cryptocop_operation *operation);
+
+int cryptocop_job_queue_insert_user_job(struct cryptocop_operation *operation);
+
+#endif /* CRYPTOCOP_H */