This series adds the support for Cavium Cryptographic Accelerarion Unit (CPT)
CPT is available in Cavium's Octeon-Tx SoC series.
The series was tested with ecryptfs and dm-crypt for in kernel cryptographic
offload operations.
Changes v1 -> v2
-- Addressed a crash issue when more gather components are passed.
-- Redo the cptvf request manager.
- Get rid of the un necessary buffer copies.
-- s/uint*_t/u*
-- Remove unwanted Macro definitions
-- Remove the redundant ROUNDUP* macros and use kernel function
-- Select proper config option in Kconfig file.
-- Removed some of the unwanted header file inclusions
-- Miscellaneous Cleanup
George Cherian (3):
drivers: crypto: Add Support for Octeon-tx CPT Engine
drivers: crypto: Add the Virtual Function driver for CPT
drivers: crypto: Enable CPT options crypto for build
drivers/crypto/Kconfig | 1 +
drivers/crypto/Makefile | 1 +
drivers/crypto/cavium/cpt/Kconfig | 16 +
drivers/crypto/cavium/cpt/Makefile | 3 +
drivers/crypto/cavium/cpt/cpt_common.h | 166 +++++
drivers/crypto/cavium/cpt/cpt_hw_types.h | 736 ++++++++++++++++++++
drivers/crypto/cavium/cpt/cptpf.h | 69 ++
drivers/crypto/cavium/cpt/cptpf_main.c | 733 ++++++++++++++++++++
drivers/crypto/cavium/cpt/cptpf_mbox.c | 163 +++++
drivers/crypto/cavium/cpt/cptvf.h | 145 ++++
drivers/crypto/cavium/cpt/cptvf_algs.c | 424 ++++++++++++
drivers/crypto/cavium/cpt/cptvf_algs.h | 110 +++
drivers/crypto/cavium/cpt/cptvf_main.c | 971 +++++++++++++++++++++++++++
drivers/crypto/cavium/cpt/cptvf_mbox.c | 205 ++++++
drivers/crypto/cavium/cpt/cptvf_reqmanager.c | 581 ++++++++++++++++
drivers/crypto/cavium/cpt/request_manager.h | 147 ++++
16 files changed, 4471 insertions(+)
create mode 100644 drivers/crypto/cavium/cpt/Kconfig
create mode 100644 drivers/crypto/cavium/cpt/Makefile
create mode 100644 drivers/crypto/cavium/cpt/cpt_common.h
create mode 100644 drivers/crypto/cavium/cpt/cpt_hw_types.h
create mode 100644 drivers/crypto/cavium/cpt/cptpf.h
create mode 100644 drivers/crypto/cavium/cpt/cptpf_main.c
create mode 100644 drivers/crypto/cavium/cpt/cptpf_mbox.c
create mode 100644 drivers/crypto/cavium/cpt/cptvf.h
create mode 100644 drivers/crypto/cavium/cpt/cptvf_algs.c
create mode 100644 drivers/crypto/cavium/cpt/cptvf_algs.h
create mode 100644 drivers/crypto/cavium/cpt/cptvf_main.c
create mode 100644 drivers/crypto/cavium/cpt/cptvf_mbox.c
create mode 100644 drivers/crypto/cavium/cpt/cptvf_reqmanager.c
create mode 100644 drivers/crypto/cavium/cpt/request_manager.h
--
2.1.4
Enable the CPT VF driver. CPT is the cryptographic Accelaration Unit
in Octeon-tx series of processors.
Signed-off-by: George Cherian <[email protected]>
---
drivers/crypto/cavium/cpt/Makefile | 3 +-
drivers/crypto/cavium/cpt/cptvf.h | 145 ++++
drivers/crypto/cavium/cpt/cptvf_algs.c | 424 ++++++++++++
drivers/crypto/cavium/cpt/cptvf_algs.h | 110 +++
drivers/crypto/cavium/cpt/cptvf_main.c | 971 +++++++++++++++++++++++++++
drivers/crypto/cavium/cpt/cptvf_mbox.c | 205 ++++++
drivers/crypto/cavium/cpt/cptvf_reqmanager.c | 581 ++++++++++++++++
drivers/crypto/cavium/cpt/request_manager.h | 147 ++++
8 files changed, 2585 insertions(+), 1 deletion(-)
create mode 100644 drivers/crypto/cavium/cpt/cptvf.h
create mode 100644 drivers/crypto/cavium/cpt/cptvf_algs.c
create mode 100644 drivers/crypto/cavium/cpt/cptvf_algs.h
create mode 100644 drivers/crypto/cavium/cpt/cptvf_main.c
create mode 100644 drivers/crypto/cavium/cpt/cptvf_mbox.c
create mode 100644 drivers/crypto/cavium/cpt/cptvf_reqmanager.c
create mode 100644 drivers/crypto/cavium/cpt/request_manager.h
diff --git a/drivers/crypto/cavium/cpt/Makefile b/drivers/crypto/cavium/cpt/Makefile
index fe3d454..dbf055e 100644
--- a/drivers/crypto/cavium/cpt/Makefile
+++ b/drivers/crypto/cavium/cpt/Makefile
@@ -1,2 +1,3 @@
-obj-$(CONFIG_CAVIUM_CPT) += cptpf.o
+obj-$(CONFIG_CAVIUM_CPT) += cptpf.o cptvf.o
cptpf-objs := cptpf_main.o cptpf_mbox.o
+cptvf-objs := cptvf_main.o cptvf_reqmanager.o cptvf_mbox.o cptvf_algs.o
diff --git a/drivers/crypto/cavium/cpt/cptvf.h b/drivers/crypto/cavium/cpt/cptvf.h
new file mode 100644
index 0000000..d649c5a
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptvf.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#ifndef __CPTVF_H
+#define __CPTVF_H
+
+#include <linux/list.h>
+#include "cpt_common.h"
+
+/* Default command queue length */
+#define CPT_CMD_QLEN 2046
+#define CPT_CMD_QCHUNK_SIZE 1023
+
+/* Default command timeout in seconds */
+#define CPT_COMMAND_TIMEOUT 4
+#define CPT_TIMER_THOLD 0xFFFF
+#define CPT_NUM_QS_PER_VF 1
+#define CPT_INST_SIZE 64
+#define CPT_NEXT_CHUNK_PTR_SIZE 8
+
+#define CPT_VF_MSIX_VECTORS 2
+#define CPT_VF_INTR_MBOX_MASK BIT(0)
+#define CPT_VF_INTR_DOVF_MASK BIT(1)
+#define CPT_VF_INTR_IRDE_MASK BIT(2)
+#define CPT_VF_INTR_NWRP_MASK BIT(3)
+#define CPT_VF_INTR_SERR_MASK BIT(4)
+
+/**
+ * Enumeration cpt_vf_int_vec_e
+ *
+ * CPT VF MSI-X Vector Enumeration
+ * Enumerates the MSI-X interrupt vectors.
+ */
+enum cpt_vf_int_vec_e {
+ CPT_VF_INT_VEC_E_MISC = 0x00,
+ CPT_VF_INT_VEC_E_DONE = 0x01
+};
+
+struct command_chunk {
+ u8 *head;
+ dma_addr_t dma_addr;
+ u32 size; /* Chunk size, max CPT_INST_CHUNK_MAX_SIZE */
+ struct hlist_node nextchunk;
+};
+
+struct command_queue {
+ spinlock_t lock; /* command queue lock */
+ u32 idx; /* Command queue host write idx */
+ u32 nchunks; /* Number of command chunks */
+ struct command_chunk *qhead; /* Command queue head, instructions
+ * are inserted here
+ */
+ struct hlist_head chead;
+};
+
+struct command_qinfo {
+ u32 cmd_size;
+ u32 qchunksize; /* Command queue chunk size */
+ struct command_queue queue[CPT_NUM_QS_PER_VF];
+};
+
+struct pending_entry {
+ u8 busy; /* Entry status (free/busy) */
+
+ volatile u64 *completion_addr; /* Completion address */
+ void *post_arg;
+ void (*callback)(int, void *); /* Kernel ASYNC request callabck */
+ void *callback_arg; /* Kernel ASYNC request callabck arg */
+};
+
+struct pending_queue {
+ struct pending_entry *head; /* head of the queue */
+ u32 front; /* Process work from here */
+ u32 rear; /* Append new work here */
+ atomic64_t pending_count;
+ spinlock_t lock; /* Queue lock */
+};
+
+struct pending_qinfo {
+ u32 nr_queues; /* Number of queues supported */
+ u32 qlen; /* Queue length */
+ struct pending_queue queue[CPT_NUM_QS_PER_VF];
+};
+
+#define for_each_pending_queue(qinfo, q, i) \
+ for (i = 0, q = &qinfo->queue[i]; i < qinfo->nr_queues; i++, \
+ q = &qinfo->queue[i])
+
+struct cpt_vf {
+ u16 flags; /* Flags to hold device status bits */
+ u8 vfid; /* Device Index 0...CPT_MAX_VF_NUM */
+ u8 vftype; /* VF type of SE_TYPE(1) or AE_TYPE(1) */
+ u8 vfgrp; /* VF group (0 - 8) */
+ u8 node; /* Operating node: Bits (46:44) in BAR0 address */
+ u8 priority; /* VF priority ring: 1-High proirity round
+ * robin ring;0-Low priority round robin ring;
+ */
+ struct pci_dev *pdev; /* pci device handle */
+ void __iomem *reg_base; /* Register start address */
+ void *wqe_info; /* BH worker info */
+ /* MSI-X */
+ bool msix_enabled;
+ struct msix_entry msix_entries[CPT_VF_MSIX_VECTORS];
+ bool irq_allocated[CPT_VF_MSIX_VECTORS];
+ cpumask_var_t affinity_mask[CPT_VF_MSIX_VECTORS];
+ /* Command and Pending queues */
+ u32 qsize;
+ u32 nr_queues;
+ struct command_qinfo cqinfo; /* Command queue information */
+ struct pending_qinfo pqinfo; /* Pending queue information */
+ /* VF-PF mailbox communication */
+ bool pf_acked;
+ bool pf_nacked;
+};
+
+#define CPT_NODE_ID_SHIFT 44u
+#define CPT_NODE_ID_MASK 3u
+
+enum dma_mode {
+ DMA_DIRECT_DIRECT, /* Input DIRECT, Output DIRECT */
+ DMA_GATHER_SCATTER
+};
+
+enum inputtype {
+ FROM_CTX = 0,
+ FROM_DPTR = 1
+};
+
+int cptvf_send_vf_up(struct cpt_vf *cptvf);
+int cptvf_send_vf_down(struct cpt_vf *cptvf);
+int cptvf_send_vf_to_grp_msg(struct cpt_vf *cptvf);
+int cptvf_send_vf_priority_msg(struct cpt_vf *cptvf);
+int cptvf_send_vq_size_msg(struct cpt_vf *cptvf);
+int cptvf_check_pf_ready(struct cpt_vf *cptvf);
+void cptvf_handle_mbox_intr(struct cpt_vf *cptvf);
+void cvm_crypto_exit(void);
+int cvm_crypto_init(struct cpt_vf *cptvf);
+void vq_post_process(struct cpt_vf *cptvf, u32 qno);
+void cptvf_write_vq_doorbell(struct cpt_vf *cptvf, u32 val);
+#endif /* __CPTVF_H */
diff --git a/drivers/crypto/cavium/cpt/cptvf_algs.c b/drivers/crypto/cavium/cpt/cptvf_algs.c
new file mode 100644
index 0000000..d7a95c7
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptvf_algs.c
@@ -0,0 +1,424 @@
+
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/crypto.h>
+#include <crypto/algapi.h>
+#include <crypto/cryptd.h>
+#include <crypto/crypto_wq.h>
+#include <linux/list.h>
+#include <linux/scatterlist.h>
+#include <linux/err.h>
+#include <crypto/aes.h>
+#include <crypto/authenc.h>
+#include <crypto/des.h>
+
+#include "request_manager.h"
+#include "cptvf.h"
+#include "cptvf_algs.h"
+
+struct cpt_device_handle {
+ void *cdev[MAX_DEVICES];
+ u32 dev_count;
+};
+
+static struct cpt_device_handle dev_handle;
+
+static void cvm_callback(u32 status, void *arg)
+{
+ struct crypto_async_request *req = (struct crypto_async_request *)arg;
+
+ req->complete(req, !status);
+}
+
+static inline void update_input_iv(struct cpt_request_info *req_info,
+ u8 *iv, u32 enc_iv_len,
+ u32 *argcnt)
+{
+ /* Setting the iv information */
+ req_info->in[*argcnt].vptr = (void *)iv;
+ req_info->in[*argcnt].size = enc_iv_len;
+ req_info->req.dlen += enc_iv_len;
+
+ ++(*argcnt);
+}
+
+static inline void update_output_iv(struct cpt_request_info *req_info,
+ u8 *iv, u32 enc_iv_len,
+ u32 *argcnt)
+{
+ /* Setting the iv information */
+ req_info->out[*argcnt].vptr = (void *)iv;
+ req_info->out[*argcnt].size = enc_iv_len;
+ req_info->rlen += enc_iv_len;
+
+ ++(*argcnt);
+}
+
+static inline void update_input_data(struct cpt_request_info *req_info,
+ struct scatterlist *inp_sg,
+ u32 nbytes, u32 *argcnt)
+{
+ req_info->req.dlen += nbytes;
+
+ while (nbytes) {
+ u32 len = min(nbytes, inp_sg->length);
+ u8 *ptr = page_address(sg_page(inp_sg)) + inp_sg->offset;
+
+ req_info->in[*argcnt].vptr = (void *)ptr;
+ req_info->in[*argcnt].size = len;
+ nbytes -= len;
+
+ ++(*argcnt);
+ ++inp_sg;
+ }
+}
+
+static inline void update_output_data(struct cpt_request_info *req_info,
+ struct scatterlist *outp_sg,
+ u32 nbytes, u32 *argcnt)
+{
+ req_info->rlen += nbytes;
+
+ while (nbytes) {
+ u32 len = min(nbytes, outp_sg->length);
+ u8 *ptr = page_address(sg_page(outp_sg)) +
+ outp_sg->offset;
+
+ req_info->out[*argcnt].vptr = (void *)ptr;
+ req_info->out[*argcnt].size = len;
+ nbytes -= len;
+ ++(*argcnt);
+ ++outp_sg;
+ }
+}
+
+static inline u32 create_ctx_hdr(struct ablkcipher_request *req, u32 enc,
+ u32 cipher_type, u32 aes_key_type,
+ u32 *argcnt)
+{
+ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
+ struct cvm_enc_ctx *ctx = crypto_ablkcipher_ctx(tfm);
+ struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req);
+ struct fc_context *fctx = &rctx->fctx;
+ u64 *offset_control = &rctx->control_word;
+ u32 enc_iv_len = crypto_ablkcipher_ivsize(tfm);
+ struct cpt_request_info *req_info = &rctx->cpt_req;
+ u64 *ctrl_flags = NULL;
+
+ req_info->ctrl.s.grp = 0;
+ req_info->ctrl.s.dma_mode = DMA_GATHER_SCATTER;
+ req_info->ctrl.s.se_req = SE_CORE_REQ;
+
+ req_info->req.opcode.s.major = MAJOR_OP_FC |
+ DMA_MODE_FLAG(DMA_GATHER_SCATTER);
+ if (enc)
+ req_info->req.opcode.s.minor = 2;
+ else
+ req_info->req.opcode.s.minor = 3;
+
+ req_info->req.param1 = req->nbytes; /* Encryption Data length */
+ req_info->req.param2 = 0; /*Auth data length */
+
+ fctx->enc.enc_ctrl.e.enc_cipher = cipher_type;
+ fctx->enc.enc_ctrl.e.aes_key = aes_key_type;
+ fctx->enc.enc_ctrl.e.iv_source = FROM_DPTR;
+
+ memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len);
+ ctrl_flags = (u64 *)&fctx->enc.enc_ctrl.flags;
+ *ctrl_flags = cpu_to_be64(*ctrl_flags);
+
+ *offset_control = cpu_to_be64(((u64)(enc_iv_len) << 16));
+ /* Storing Packet Data Information in offset
+ * Control Word First 8 bytes
+ */
+ req_info->in[*argcnt].vptr = (u8 *)offset_control;
+ req_info->in[*argcnt].size = CONTROL_WORD_LEN;
+ req_info->req.dlen += CONTROL_WORD_LEN;
+
+ ++(*argcnt);
+
+ req_info->in[*argcnt].vptr = (u8 *)fctx;
+ req_info->in[*argcnt].size = sizeof(struct fc_context);
+ req_info->req.dlen += sizeof(struct fc_context);
+
+ ++(*argcnt);
+
+ return 0;
+}
+
+static inline u32 create_input_list(struct ablkcipher_request *req, u32 enc,
+ u32 cipher_type, u32 aes_key_type,
+ u32 enc_iv_len)
+{
+ struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req);
+ struct cpt_request_info *req_info = &rctx->cpt_req;
+ u32 argcnt = 0;
+
+ create_ctx_hdr(req, enc, cipher_type, aes_key_type, &argcnt);
+ update_input_iv(req_info, req->info, enc_iv_len, &argcnt);
+ update_input_data(req_info, req->src, req->nbytes, &argcnt);
+ req_info->incnt = argcnt;
+
+ return 0;
+}
+
+static inline void store_cb_info(struct ablkcipher_request *req,
+ struct cpt_request_info *req_info)
+{
+ req_info->callback = (void *)cvm_callback;
+ req_info->callback_arg = (void *)&req->base;
+}
+
+static inline void create_output_list(struct ablkcipher_request *req,
+ u32 cipher_type,
+ u32 enc_iv_len)
+{
+ struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req);
+ struct cpt_request_info *req_info = &rctx->cpt_req;
+ u32 argcnt = 0;
+
+ /* OUTPUT Buffer Processing
+ * AES encryption/decryption output would be
+ * received in the following format
+ *
+ * ------IV--------|------ENCRYPTED/DECRYPTED DATA-----|
+ * [ 16 Bytes/ [ Request Enc/Dec/ DATA Len AES CBC ]
+ */
+ /* Reading IV information */
+ update_output_iv(req_info, req->info, enc_iv_len, &argcnt);
+ update_output_data(req_info, req->dst, req->nbytes, &argcnt);
+ req_info->outcnt = argcnt;
+}
+
+static inline u32 cvm_enc_dec(struct ablkcipher_request *req, u32 enc,
+ u32 cipher_type)
+{
+ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
+ struct cvm_enc_ctx *ctx = crypto_ablkcipher_ctx(tfm);
+ u32 key_type = AES_128_BIT;
+ struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req);
+ u32 enc_iv_len = crypto_ablkcipher_ivsize(tfm);
+ struct fc_context *fctx = &rctx->fctx;
+ struct cpt_request_info *req_info = &rctx->cpt_req;
+ void *cdev = NULL;
+ u32 status = -1;
+
+ switch (ctx->key_len) {
+ case 16:
+ key_type = AES_128_BIT;
+ break;
+ case 24:
+ key_type = AES_192_BIT;
+ break;
+ case 32:
+ key_type = AES_256_BIT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (cipher_type == DES3_CBC)
+ key_type = 0;
+
+ memset(req_info, 0, sizeof(struct cpt_request_info));
+ memset(fctx, 0, sizeof(struct fc_context));
+ create_input_list(req, enc, cipher_type, key_type, enc_iv_len);
+ create_output_list(req, cipher_type, enc_iv_len);
+ store_cb_info(req, req_info);
+ cdev = dev_handle.cdev[smp_processor_id()];
+ status = cptvf_do_request(cdev, req_info);
+ /* We perform an asynchronous send and once
+ * the request is completed the driver would
+ * intimate through registered call back functions
+ */
+
+ if (status)
+ return status;
+ else
+ return -EINPROGRESS;
+}
+
+s32 cvm_des3_encrypt_cbc(struct ablkcipher_request *req)
+{
+ return cvm_enc_dec(req, true, DES3_CBC);
+}
+
+s32 cvm_des3_decrypt_cbc(struct ablkcipher_request *req)
+{
+ return cvm_enc_dec(req, false, DES3_CBC);
+}
+
+s32 cvm_aes_encrypt_xts(struct ablkcipher_request *req)
+{
+ return cvm_enc_dec(req, true, AES_XTS);
+}
+
+s32 cvm_aes_decrypt_xts(struct ablkcipher_request *req)
+{
+ return cvm_enc_dec(req, false, AES_XTS);
+}
+
+s32 cvm_aes_encrypt_cbc(struct ablkcipher_request *req)
+{
+ return cvm_enc_dec(req, true, AES_CBC);
+}
+
+s32 cvm_aes_decrypt_cbc(struct ablkcipher_request *req)
+{
+ return cvm_enc_dec(req, false, AES_CBC);
+}
+
+s32 cvm_enc_dec_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
+ u32 keylen)
+{
+ struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
+ struct cvm_enc_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ if ((keylen == 16) || (keylen == 24) || (keylen == 32)) {
+ ctx->key_len = keylen;
+ memcpy(ctx->enc_key, key, keylen);
+ return 0;
+ }
+ crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
+
+ return -EINVAL;
+}
+
+s32 cvm_enc_dec_init(struct crypto_tfm *tfm)
+{
+ struct cvm_enc_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ memset(ctx, 0, sizeof(*ctx));
+ tfm->crt_ablkcipher.reqsize = sizeof(struct cvm_req_ctx) +
+ sizeof(struct ablkcipher_request);
+ /* Additional memory for ablkcipher_request is
+ * allocated since the cryptd daemon uses
+ * this memory for request_ctx information
+ */
+
+ return 0;
+}
+
+void cvm_enc_dec_exit(struct crypto_tfm *tfm)
+{
+ return;
+}
+
+struct crypto_alg algs[] = { {
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cvm_enc_ctx),
+ .cra_alignmask = 7,
+ .cra_priority = 4001,
+ .cra_name = "xts(aes)",
+ .cra_driver_name = "cavium-xts-aes",
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_u = {
+ .ablkcipher = {
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = cvm_enc_dec_setkey,
+ .encrypt = cvm_aes_encrypt_xts,
+ .decrypt = cvm_aes_decrypt_xts,
+ },
+ },
+ .cra_init = cvm_enc_dec_init,
+ .cra_exit = cvm_enc_dec_exit,
+ .cra_module = THIS_MODULE,
+}, {
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cvm_enc_ctx),
+ .cra_alignmask = 7,
+ .cra_priority = 4001,
+ .cra_name = "cbc(aes)",
+ .cra_driver_name = "cavium-cbc-aes",
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_u = {
+ .ablkcipher = {
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = cvm_enc_dec_setkey,
+ .encrypt = cvm_aes_encrypt_cbc,
+ .decrypt = cvm_aes_decrypt_cbc,
+ },
+ },
+ .cra_init = cvm_enc_dec_init,
+ .cra_exit = cvm_enc_dec_exit,
+ .cra_module = THIS_MODULE,
+}, {
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cvm_des3_ctx),
+ .cra_alignmask = 7,
+ .cra_priority = 4001,
+ .cra_name = "cbc(des3_ede)",
+ .cra_driver_name = "cavium-cbc-des3_ede",
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = DES_BLOCK_SIZE,
+ .setkey = cvm_enc_dec_setkey,
+ .encrypt = cvm_des3_encrypt_cbc,
+ .decrypt = cvm_des3_decrypt_cbc,
+ },
+ },
+ .cra_init = cvm_enc_dec_init,
+ .cra_exit = cvm_enc_dec_exit,
+ .cra_module = THIS_MODULE,
+} };
+
+static inline s32 cav_register_algs(void)
+{
+ s32 err = 0;
+
+ err = crypto_register_algs(algs, ARRAY_SIZE(algs));
+ if (err) {
+ pr_err("Error in aes module init %d\n", err);
+ return -1;
+ }
+
+ return 0;
+}
+
+static inline void cav_unregister_algs(void)
+{
+ crypto_unregister_algs(algs, ARRAY_SIZE(algs));
+}
+
+s32 cvm_crypto_init(struct cpt_vf *cptvf)
+{
+ u32 dev_count;
+
+ dev_count = dev_handle.dev_count;
+ dev_handle.cdev[dev_count] = cptvf;
+ dev_handle.dev_count++;
+
+ if (!dev_count) {
+ if (cav_register_algs()) {
+ pr_err("Error in registering crypto algorithms\n");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+void cvm_crypto_exit(void)
+{
+ u32 dev_count;
+
+ dev_count = --dev_handle.dev_count;
+ if (!dev_count)
+ cav_unregister_algs();
+}
diff --git a/drivers/crypto/cavium/cpt/cptvf_algs.h b/drivers/crypto/cavium/cpt/cptvf_algs.h
new file mode 100644
index 0000000..fcb287b
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptvf_algs.h
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#ifndef _CPTVF_ALGS_H_
+#define _CPTVF_ALGS_H_
+
+#define MAX_DEVICES 16
+#define MAJOR_OP_FC 0x33
+#define MAX_ENC_KEY_SIZE 32
+#define MAX_HASH_KEY_SIZE 64
+#define MAX_KEY_SIZE (MAX_ENC_KEY_SIZE + MAX_HASH_KEY_SIZE)
+#define CONTROL_WORD_LEN 8
+
+#define DMA_MODE_FLAG(dma_mode) \
+ (((dma_mode) == DMA_GATHER_SCATTER) ? (1 << 7) : 0)
+
+enum req_type {
+ AE_CORE_REQ,
+ SE_CORE_REQ,
+};
+
+enum cipher_type {
+ DES3_CBC = 0x1,
+ DES3_ECB = 0x2,
+ AES_CBC = 0x3,
+ AES_ECB = 0x4,
+ AES_CFB = 0x5,
+ AES_CTR = 0x6,
+ AES_GCM = 0x7,
+ AES_XTS = 0x8
+};
+
+enum aes_type {
+ AES_128_BIT = 0x1,
+ AES_192_BIT = 0x2,
+ AES_256_BIT = 0x3
+};
+
+union encr_ctrl {
+ u64 flags;
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u64 enc_cipher:4;
+ u64 reserved1:1;
+ u64 aes_key:2;
+ u64 iv_source:1;
+ u64 hash_type:4;
+ u64 reserved2:3;
+ u64 auth_input_type:1;
+ u64 mac_len:8;
+ u64 reserved3:8;
+ u64 encr_offset:16;
+ u64 iv_offset:8;
+ u64 auth_offset:8;
+#else
+ u64 auth_offset:8;
+ u64 iv_offset:8;
+ u64 encr_offset:16;
+ u64 reserved3:8;
+ u64 mac_len:8;
+ u64 auth_input_type:1;
+ u64 reserved2:3;
+ u64 hash_type:4;
+ u64 iv_source:1;
+ u64 aes_key:2;
+ u64 reserved1:1;
+ u64 enc_cipher:4;
+#endif
+ } e;
+};
+
+struct enc_context {
+ union encr_ctrl enc_ctrl;
+ u8 encr_key[32];
+ u8 encr_iv[16];
+};
+
+struct fchmac_context {
+ u8 ipad[64];
+ u8 opad[64]; /* or OPAD */
+};
+
+struct fc_context {
+ struct enc_context enc;
+ struct fchmac_context hmac;
+};
+
+struct cvm_enc_ctx {
+ u32 key_len;
+ u8 enc_key[MAX_KEY_SIZE];
+};
+
+struct cvm_des3_ctx {
+ u32 key_len;
+ u8 des3_key[MAX_KEY_SIZE];
+};
+
+struct cvm_req_ctx {
+ struct cpt_request_info cpt_req;
+ u64 control_word;
+ struct fc_context fctx;
+};
+
+u32 cptvf_do_request(void *cptvf, struct cpt_request_info *req);
+#endif /*_CPTVF_ALGS_H_*/
diff --git a/drivers/crypto/cavium/cpt/cptvf_main.c b/drivers/crypto/cavium/cpt/cptvf_main.c
new file mode 100644
index 0000000..79e5043
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptvf_main.c
@@ -0,0 +1,971 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+
+#include "cptvf.h"
+
+#define DRV_NAME "thunder-cptvf"
+#define DRV_VERSION "1.0"
+
+struct cptvf_wqe {
+ struct tasklet_struct twork;
+ void *cptvf;
+ u32 qno;
+};
+
+struct cptvf_wqe_info {
+ struct cptvf_wqe vq_wqe[CPT_NUM_QS_PER_VF];
+};
+
+static void vq_work_handler(unsigned long data)
+{
+ struct cptvf_wqe_info *cwqe_info = (struct cptvf_wqe_info *)data;
+ struct cptvf_wqe *cwqe = &cwqe_info->vq_wqe[0];
+
+ vq_post_process(cwqe->cptvf, cwqe->qno);
+}
+
+static s32 init_worker_threads(struct cpt_vf *cptvf)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+ struct cptvf_wqe_info *cwqe_info;
+ s32 i;
+
+ cwqe_info = kzalloc(sizeof(*cwqe_info), GFP_KERNEL);
+ if (!cwqe_info)
+ return -ENOMEM;
+
+ if (cptvf->nr_queues) {
+ dev_info(&pdev->dev, "Creating VQ worker threads (%d)\n",
+ cptvf->nr_queues);
+ }
+
+ for (i = 0; i < cptvf->nr_queues; i++) {
+ tasklet_init(&cwqe_info->vq_wqe[i].twork, vq_work_handler,
+ (u64)cwqe_info);
+ cwqe_info->vq_wqe[i].qno = i;
+ cwqe_info->vq_wqe[i].cptvf = cptvf;
+ }
+
+ cptvf->wqe_info = cwqe_info;
+
+ return 0;
+}
+
+static void cleanup_worker_threads(struct cpt_vf *cptvf)
+{
+ struct cptvf_wqe_info *cwqe_info;
+ struct pci_dev *pdev = cptvf->pdev;
+ s32 i;
+
+ cwqe_info = (struct cptvf_wqe_info *)cptvf->wqe_info;
+ if (!cwqe_info)
+ return;
+
+ if (cptvf->nr_queues) {
+ dev_info(&pdev->dev, "Cleaning VQ worker threads (%u)\n",
+ cptvf->nr_queues);
+ }
+
+ for (i = 0; i < cptvf->nr_queues; i++)
+ tasklet_kill(&cwqe_info->vq_wqe[i].twork);
+
+ kzfree(cwqe_info);
+ cptvf->wqe_info = NULL;
+}
+
+static void free_pending_queues(struct pending_qinfo *pqinfo)
+{
+ s32 i;
+ struct pending_queue *queue;
+
+ for_each_pending_queue(pqinfo, queue, i) {
+ if (!queue->head)
+ continue;
+
+ /* free single queue */
+ kzfree((queue->head));
+
+ queue->front = 0;
+ queue->rear = 0;
+
+ return;
+ }
+
+ pqinfo->qlen = 0;
+ pqinfo->nr_queues = 0;
+}
+
+static s32 alloc_pending_queues(struct pending_qinfo *pqinfo, u32 qlen,
+ u32 nr_queues)
+{
+ u32 i;
+ size_t size;
+ s32 ret;
+ struct pending_queue *queue = NULL;
+
+ pqinfo->nr_queues = nr_queues;
+ pqinfo->qlen = qlen;
+
+ size = (qlen * sizeof(struct pending_entry));
+
+ for_each_pending_queue(pqinfo, queue, i) {
+ queue->head = kzalloc((size), GFP_KERNEL);
+ if (!queue->head) {
+ pr_err("pending Q (%d) allocation failed\n", i);
+ ret = -ENOMEM;
+ goto pending_qfail;
+ }
+
+ queue->front = 0;
+ queue->rear = 0;
+ atomic64_set((&queue->pending_count), (0));
+
+ /* init queue spin lock */
+ spin_lock_init(&queue->lock);
+ }
+
+ return 0;
+
+pending_qfail:
+ free_pending_queues(pqinfo);
+
+ return ret;
+}
+
+static s32 init_pending_queues(struct cpt_vf *cptvf, u32 qlen, u32 nr_queues)
+{
+ s32 ret;
+
+ if (!nr_queues)
+ return 0;
+
+ ret = alloc_pending_queues(&cptvf->pqinfo, qlen, nr_queues);
+ if (ret) {
+ pr_err("failed to setup pending queues (%u)\n", nr_queues);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void cleanup_pending_queues(struct cpt_vf *cptvf)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+
+ if (!cptvf->nr_queues)
+ return;
+
+ dev_info(&pdev->dev, "Cleaning VQ pending queue (%u)\n",
+ cptvf->nr_queues);
+ free_pending_queues(&cptvf->pqinfo);
+}
+
+static void free_command_queues(struct cpt_vf *cptvf,
+ struct command_qinfo *cqinfo)
+{
+ s32 i, j;
+ struct command_queue *queue = NULL;
+ struct command_chunk *chunk = NULL, *next = NULL;
+ struct pci_dev *pdev = cptvf->pdev;
+ struct hlist_node *node;
+
+ /* clean up for each queue */
+ for (i = 0; i < cptvf->nr_queues; i++) {
+ queue = &cqinfo->queue[i];
+ if (hlist_empty(&cqinfo->queue[i].chead))
+ continue;
+
+ hlist_for_each(node, &cqinfo->queue[i].chead) {
+ chunk = hlist_entry(node, struct command_chunk,
+ nextchunk);
+ break;
+ }
+
+ for (j = 0; j < queue->nchunks; j++) {
+ if (j < queue->nchunks) {
+ node = node->next;
+ next = hlist_entry(node, struct command_chunk,
+ nextchunk);
+ }
+
+ dma_free_coherent(&pdev->dev, chunk->size,
+ chunk->head,
+ chunk->dma_addr);
+ chunk->head = NULL;
+ chunk->dma_addr = 0;
+ hlist_del(&chunk->nextchunk);
+ kzfree(chunk);
+ chunk = next;
+ }
+ queue->nchunks = 0;
+ queue->idx = 0;
+ }
+
+ /* common cleanup */
+ cqinfo->cmd_size = 0;
+}
+
+static s32 alloc_command_queues(struct cpt_vf *cptvf,
+ struct command_qinfo *cqinfo, size_t cmd_size,
+ u32 qlen)
+{
+ s32 i;
+ size_t q_size;
+ struct command_queue *queue = NULL;
+ struct pci_dev *pdev = cptvf->pdev;
+
+ /* common init */
+ cqinfo->cmd_size = cmd_size;
+ /* Qsize in dwords, needed for SADDR config, 1-next chunk pointer */
+ cptvf->qsize = min(qlen, cqinfo->qchunksize) *
+ CPT_NEXT_CHUNK_PTR_SIZE + 1;
+ /* Qsize in bytes to create space for alignment */
+ q_size = qlen * cqinfo->cmd_size;
+
+ /* per queue initialization */
+ for (i = 0; i < cptvf->nr_queues; i++) {
+ size_t c_size = 0;
+ size_t rem_q_size = q_size;
+ struct command_chunk *curr = NULL, *first = NULL, *last = NULL;
+ u32 qcsize_bytes = cqinfo->qchunksize * cqinfo->cmd_size;
+
+ queue = &cqinfo->queue[i];
+ INIT_HLIST_HEAD(&cqinfo->queue[i].chead);
+ do {
+ curr = kzalloc(sizeof(*curr), GFP_KERNEL);
+ if (!curr)
+ goto cmd_qfail;
+
+ c_size = (rem_q_size > qcsize_bytes) ? qcsize_bytes :
+ rem_q_size;
+ curr->head = (u8 *)dma_zalloc_coherent(&pdev->dev,
+ c_size + CPT_NEXT_CHUNK_PTR_SIZE,
+ &curr->dma_addr, GFP_KERNEL);
+ if (!curr->head) {
+ pr_err("Command Q (%d) chunk (%d) allocation failed\n",
+ i, queue->nchunks);
+ goto cmd_qfail;
+ }
+
+ curr->size = c_size;
+ if (queue->nchunks == 0) {
+ hlist_add_head(&curr->nextchunk,
+ &cqinfo->queue[i].chead);
+ first = curr;
+ } else {
+ hlist_add_behind(&curr->nextchunk,
+ &last->nextchunk);
+ }
+
+ queue->nchunks++;
+ rem_q_size -= c_size;
+ if (last)
+ *((u64 *)(&last->head[last->size])) = (u64)curr->dma_addr;
+
+ last = curr;
+ } while (rem_q_size);
+
+ /* Make the queue circular */
+ /* Tie back last chunk entry to head */
+ curr = first;
+ *((u64 *)(&last->head[last->size])) = (u64)curr->dma_addr;
+ last->nextchunk.next = &curr->nextchunk;
+ queue->qhead = curr;
+ spin_lock_init(&queue->lock);
+ }
+ return 0;
+
+cmd_qfail:
+ free_command_queues(cptvf, cqinfo);
+ return -ENOMEM;
+}
+
+static s32 init_command_queues(struct cpt_vf *cptvf, u32 qlen)
+{
+ s32 ret;
+
+ /* setup AE command queues */
+ ret = alloc_command_queues(cptvf, &cptvf->cqinfo, CPT_INST_SIZE,
+ qlen);
+ if (ret) {
+ pr_err("failed to allocate AE command queues (%u)\n",
+ cptvf->nr_queues);
+ return ret;
+ }
+
+ return ret;
+}
+
+static void cleanup_command_queues(struct cpt_vf *cptvf)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+
+ if (!cptvf->nr_queues)
+ return;
+
+ dev_info(&pdev->dev, "Cleaning VQ command queue (%u)\n",
+ cptvf->nr_queues);
+ free_command_queues(cptvf, &cptvf->cqinfo);
+}
+
+static void cptvf_sw_cleanup(struct cpt_vf *cptvf)
+{
+ cleanup_worker_threads(cptvf);
+ cleanup_pending_queues(cptvf);
+ cleanup_command_queues(cptvf);
+}
+
+static s32 cptvf_sw_init(struct cpt_vf *cptvf, u32 qlen, u32 nr_queues)
+{
+ s32 ret = 0;
+ u32 max_dev_queues = 0;
+
+ max_dev_queues = CPT_NUM_QS_PER_VF;
+ /* possible cpus */
+ nr_queues = min_t(u32, nr_queues, max_dev_queues);
+ cptvf->nr_queues = nr_queues;
+
+ ret = init_command_queues(cptvf, qlen);
+ if (ret) {
+ pr_err("Failed to setup command queues (%u)\n", nr_queues);
+ return ret;
+ }
+
+ ret = init_pending_queues(cptvf, qlen, nr_queues);
+ if (ret) {
+ pr_err("Failed to setup pending queues (%u)\n", nr_queues);
+ goto setup_pqfail;
+ }
+
+ /* Create worker threads for BH processing */
+ ret = init_worker_threads(cptvf);
+ if (ret) {
+ pr_err("Failed to setup worker threads\n");
+ goto init_work_fail;
+ }
+
+ return 0;
+
+init_work_fail:
+ cleanup_worker_threads(cptvf);
+ cleanup_pending_queues(cptvf);
+
+setup_pqfail:
+ cleanup_command_queues(cptvf);
+
+ return ret;
+}
+
+static inline s32 cptvf_get_node_id(struct pci_dev *pdev)
+{
+ u64 addr = pci_resource_start(pdev, 0);
+
+ return ((addr >> CPT_NODE_ID_SHIFT) & CPT_NODE_ID_MASK);
+}
+
+static void cptvf_disable_msix(struct cpt_vf *cptvf)
+{
+ if (cptvf->msix_enabled) {
+ pci_disable_msix(cptvf->pdev);
+ cptvf->msix_enabled = 0;
+ }
+}
+
+static s32 cptvf_enable_msix(struct cpt_vf *cptvf)
+{
+ s32 i, ret;
+
+ for (i = 0; i < CPT_VF_MSIX_VECTORS; i++)
+ cptvf->msix_entries[i].entry = i;
+
+ ret = pci_enable_msix(cptvf->pdev, cptvf->msix_entries,
+ CPT_VF_MSIX_VECTORS);
+ if (ret) {
+ dev_err(&cptvf->pdev->dev, "Request for #%d msix vectors failed\n",
+ CPT_VF_MSIX_VECTORS);
+ return ret;
+ }
+
+ cptvf->msix_enabled = 1;
+ /* Mark MSIX enabled */
+ cptvf->flags |= CPT_FLAG_MSIX_ENABLED;
+
+ return 0;
+}
+
+static void cptvf_free_all_interrupts(struct cpt_vf *cptvf)
+{
+ s32 irq;
+
+ for (irq = 0; irq < CPT_VF_MSIX_VECTORS; irq++) {
+ if (cptvf->irq_allocated[irq])
+ irq_set_affinity_hint(cptvf->msix_entries[irq].vector,
+ NULL);
+ free_cpumask_var(cptvf->affinity_mask[irq]);
+ free_irq(cptvf->msix_entries[irq].vector, cptvf);
+ cptvf->irq_allocated[irq] = false;
+ }
+}
+
+static void cptvf_write_vq_ctl(struct cpt_vf *cptvf, bool val)
+{
+ union cptx_vqx_ctl vqx_ctl;
+
+ vqx_ctl.u = cpt_read_csr64(cptvf->reg_base, CPTX_VQX_CTL(0, 0));
+ vqx_ctl.s.ena = val;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_CTL(0, 0), vqx_ctl.u);
+}
+
+void cptvf_write_vq_doorbell(struct cpt_vf *cptvf, u32 val)
+{
+ union cptx_vqx_doorbell vqx_dbell;
+
+ vqx_dbell.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_DOORBELL(0, 0));
+ vqx_dbell.s.dbell_cnt = val * 8; /* Num of Instructions * 8 words */
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DOORBELL(0, 0),
+ vqx_dbell.u);
+}
+
+static void cptvf_write_vq_inprog(struct cpt_vf *cptvf, u8 val)
+{
+ union cptx_vqx_inprog vqx_inprg;
+
+ vqx_inprg.u = cpt_read_csr64(cptvf->reg_base, CPTX_VQX_INPROG(0, 0));
+ vqx_inprg.s.inflight = val;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_INPROG(0, 0), vqx_inprg.u);
+}
+
+static void cptvf_write_vq_done_numwait(struct cpt_vf *cptvf, u32 val)
+{
+ union cptx_vqx_done_wait vqx_dwait;
+
+ vqx_dwait.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_DONE_WAIT(0, 0));
+ vqx_dwait.s.num_wait = val;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DONE_WAIT(0, 0),
+ vqx_dwait.u);
+}
+
+static void cptvf_write_vq_done_timewait(struct cpt_vf *cptvf, u16 time)
+{
+ union cptx_vqx_done_wait vqx_dwait;
+
+ vqx_dwait.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_DONE_WAIT(0, 0));
+ vqx_dwait.s.time_wait = time;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DONE_WAIT(0, 0),
+ vqx_dwait.u);
+}
+
+static void cptvf_enable_swerr_interrupts(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_misc_ena_w1s vqx_misc_ena;
+
+ vqx_misc_ena.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_MISC_ENA_W1S(0, 0));
+ /* Set mbox(0) interupts for the requested vf */
+ vqx_misc_ena.s.swerr = 1;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_ENA_W1S(0, 0),
+ vqx_misc_ena.u);
+}
+
+static void cptvf_enable_mbox_interrupts(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_misc_ena_w1s vqx_misc_ena;
+
+ vqx_misc_ena.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_MISC_ENA_W1S(0, 0));
+ /* Set mbox(0) interupts for the requested vf */
+ vqx_misc_ena.s.mbox = 1;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_ENA_W1S(0, 0),
+ vqx_misc_ena.u);
+}
+
+static void cptvf_enable_done_interrupts(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_done_ena_w1s vqx_done_ena;
+
+ vqx_done_ena.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_DONE_ENA_W1S(0, 0));
+ /* Set DONE interrupt for the requested vf */
+ vqx_done_ena.s.done = 1;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DONE_ENA_W1S(0, 0),
+ vqx_done_ena.u);
+}
+
+static void cptvf_clear_dovf_intr(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_MISC_INT(0, 0));
+ /* W1C for the VF */
+ vqx_misc_int.s.dovf = 1;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0),
+ vqx_misc_int.u);
+}
+
+static void cptvf_clear_irde_intr(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_MISC_INT(0, 0));
+ /* W1C for the VF */
+ vqx_misc_int.s.irde = 1;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0),
+ vqx_misc_int.u);
+}
+
+static void cptvf_clear_nwrp_intr(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_MISC_INT(0, 0));
+ /* W1C for the VF */
+ vqx_misc_int.s.nwrp = 1;
+ cpt_write_csr64(cptvf->reg_base,
+ CPTX_VQX_MISC_INT(0, 0), vqx_misc_int.u);
+}
+
+static void cptvf_clear_mbox_intr(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_MISC_INT(0, 0));
+ /* W1C for the VF */
+ vqx_misc_int.s.mbox = 1;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0),
+ vqx_misc_int.u);
+}
+
+static void cptvf_clear_swerr_intr(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_MISC_INT(0, 0));
+ /* W1C for the VF */
+ vqx_misc_int.s.swerr = 1;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0),
+ vqx_misc_int.u);
+}
+
+static u64 cptvf_read_vf_misc_intr_status(struct cpt_vf *cptvf)
+{
+ return cpt_read_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0));
+}
+
+static irqreturn_t cptvf_misc_intr_handler(s32 irq, void *cptvf_irq)
+{
+ struct cpt_vf *cptvf = (struct cpt_vf *)cptvf_irq;
+ u64 intr;
+
+ intr = cptvf_read_vf_misc_intr_status(cptvf);
+ /*Check for MISC interrupt types*/
+ if (likely(intr & CPT_VF_INTR_MBOX_MASK)) {
+ pr_err("Mailbox interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ cptvf_handle_mbox_intr(cptvf);
+ cptvf_clear_mbox_intr(cptvf);
+ } else if (unlikely(intr & CPT_VF_INTR_DOVF_MASK)) {
+ cptvf_clear_dovf_intr(cptvf);
+ /*Clear doorbell count*/
+ cptvf_write_vq_doorbell(cptvf, 0);
+ pr_err("Doorbell overflow error interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ } else if (unlikely(intr & CPT_VF_INTR_IRDE_MASK)) {
+ cptvf_clear_irde_intr(cptvf);
+ pr_err("Instruction NCB read error interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ } else if (unlikely(intr & CPT_VF_INTR_NWRP_MASK)) {
+ cptvf_clear_nwrp_intr(cptvf);
+ pr_err("NCB response write error interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ } else if (unlikely(intr & CPT_VF_INTR_SERR_MASK)) {
+ cptvf_clear_swerr_intr(cptvf);
+ pr_err("Software error interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ } else {
+ pr_err("Unhandled interrupt in CPT VF %d\n", cptvf->vfid);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static inline struct cptvf_wqe *get_cptvf_vq_wqe(struct cpt_vf *cptvf,
+ s32 qno)
+{
+ struct cptvf_wqe_info *nwqe_info;
+
+ if (unlikely(qno >= cptvf->nr_queues))
+ return NULL;
+ nwqe_info = (struct cptvf_wqe_info *)cptvf->wqe_info;
+
+ return &nwqe_info->vq_wqe[qno];
+}
+
+static inline u32 cptvf_read_vq_done_count(struct cpt_vf *cptvf)
+{
+ union cptx_vqx_done vqx_done;
+
+ vqx_done.u = cpt_read_csr64(cptvf->reg_base, CPTX_VQX_DONE(0, 0));
+ return vqx_done.s.done;
+}
+
+static inline void cptvf_write_vq_done_ack(struct cpt_vf *cptvf,
+ u32 ackcnt)
+{
+ union cptx_vqx_done_ack vqx_dack_cnt;
+
+ vqx_dack_cnt.u = cpt_read_csr64(cptvf->reg_base,
+ CPTX_VQX_DONE_ACK(0, 0));
+ vqx_dack_cnt.s.done_ack = ackcnt;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DONE_ACK(0, 0),
+ vqx_dack_cnt.u);
+}
+
+static irqreturn_t cptvf_done_intr_handler(s32 irq, void *cptvf_irq)
+{
+ struct cpt_vf *cptvf = (struct cpt_vf *)cptvf_irq;
+ /* Read the number of completions */
+ u32 intr = cptvf_read_vq_done_count(cptvf);
+
+ if (intr) {
+ struct cptvf_wqe *wqe;
+
+ /* Acknowledge the number of
+ * scheduled completions for processing
+ */
+ cptvf_write_vq_done_ack(cptvf, intr);
+ wqe = get_cptvf_vq_wqe(cptvf, 0);
+ if (unlikely(!wqe)) {
+ pr_err("No work to schedule for VF (%d)",
+ cptvf->vfid);
+ return 1;
+ }
+ tasklet_hi_schedule(&wqe->twork);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static s32 cptvf_register_misc_intr(struct cpt_vf *cptvf)
+{
+ s32 ret;
+ struct device *dev = &cptvf->pdev->dev;
+
+ /* Register misc interrupt handlers */
+ ret = request_irq(cptvf->msix_entries[CPT_VF_INT_VEC_E_MISC].vector,
+ cptvf_misc_intr_handler, 0, "CPT VF misc intr",
+ cptvf);
+ if (ret)
+ goto fail;
+
+ cptvf->irq_allocated[CPT_VF_INT_VEC_E_MISC] = true;
+
+ /* Enable mailbox interrupt */
+ cptvf_enable_mbox_interrupts(cptvf);
+ cptvf_enable_swerr_interrupts(cptvf);
+
+ return 0;
+
+fail:
+ dev_err(dev, "Request misc irq failed");
+ cptvf_free_all_interrupts(cptvf);
+ return ret;
+}
+
+static s32 cptvf_register_done_intr(struct cpt_vf *cptvf)
+{
+ s32 ret;
+ struct device *dev = &cptvf->pdev->dev;
+
+ /* Register DONE interrupt handlers */
+ ret = request_irq(cptvf->msix_entries[CPT_VF_INT_VEC_E_DONE].vector,
+ cptvf_done_intr_handler, 0, "CPT VF done intr",
+ cptvf);
+ if (ret)
+ goto fail;
+
+ cptvf->irq_allocated[CPT_VF_INT_VEC_E_DONE] = true;
+
+ /* Enable mailbox interrupt */
+ cptvf_enable_done_interrupts(cptvf);
+ return 0;
+
+fail:
+ dev_err(dev, "Request done irq failed\n");
+ cptvf_free_all_interrupts(cptvf);
+ return ret;
+}
+
+static void cptvf_unregister_interrupts(struct cpt_vf *cptvf)
+{
+ cptvf_free_all_interrupts(cptvf);
+ cptvf_disable_msix(cptvf);
+}
+
+static void cptvf_set_irq_affinity(struct cpt_vf *cptvf)
+{
+ s32 vec, cpu;
+ s32 irqnum;
+
+ for (vec = 0; vec < CPT_VF_MSIX_VECTORS; vec++) {
+ if (!cptvf->irq_allocated[vec])
+ continue;
+
+ if (!zalloc_cpumask_var(&cptvf->affinity_mask[vec],
+ GFP_KERNEL)) {
+ pr_err("Allocation failed for affinity_mask for VF %d",
+ cptvf->vfid);
+ return;
+ }
+
+ cpu = cptvf->vfid % num_online_cpus();
+ cpumask_set_cpu(cpumask_local_spread(cpu, cptvf->node),
+ cptvf->affinity_mask[vec]);
+ irqnum = cptvf->msix_entries[vec].vector;
+ irq_set_affinity_hint(irqnum, cptvf->affinity_mask[vec]);
+ }
+}
+
+static void cptvf_write_vq_saddr(struct cpt_vf *cptvf, u64 val)
+{
+ union cptx_vqx_saddr vqx_saddr;
+
+ vqx_saddr.u = val;
+ cpt_write_csr64(cptvf->reg_base, CPTX_VQX_SADDR(0, 0), vqx_saddr.u);
+}
+
+void cptvf_device_init(struct cpt_vf *cptvf)
+{
+ u64 base_addr = 0;
+
+ /* Disable the VQ */
+ cptvf_write_vq_ctl(cptvf, 0);
+ /* Reset the doorbell */
+ cptvf_write_vq_doorbell(cptvf, 0);
+ /* Clear inflight */
+ cptvf_write_vq_inprog(cptvf, 0);
+ /* Write VQ SADDR */
+ /* TODO: for now only one queue, so hard coded */
+ base_addr = (u64)(cptvf->cqinfo.queue[0].qhead->dma_addr);
+ cptvf_write_vq_saddr(cptvf, base_addr);
+ /* Configure timerhold / coalescence */
+ cptvf_write_vq_done_timewait(cptvf, CPT_TIMER_THOLD);
+ cptvf_write_vq_done_numwait(cptvf, 1);
+ /* Enable the VQ */
+ cptvf_write_vq_ctl(cptvf, 1);
+ /* Flag the VF ready */
+ cptvf->flags |= CPT_FLAG_DEVICE_READY;
+}
+
+static s32 cptvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct device *dev = &pdev->dev;
+ struct cpt_vf *cptvf;
+ s32 err;
+
+ cptvf = devm_kzalloc(dev, sizeof(struct cpt_vf), GFP_KERNEL);
+ if (!cptvf)
+ return -ENOMEM;
+
+ pci_set_drvdata(pdev, cptvf);
+ cptvf->pdev = pdev;
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(dev, "Failed to enable PCI device\n");
+ pci_set_drvdata(pdev, NULL);
+ return err;
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(dev, "PCI request regions failed 0x%x\n", err);
+ goto cptvf_err_disable_device;
+ }
+ /* Mark as VF driver */
+ cptvf->flags |= CPT_FLAG_VF_DRIVER;
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "Unable to get usable DMA configuration\n");
+ goto cptvf_err_release_regions;
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "Unable to get 48-bit DMA for consistent allocations\n");
+ goto cptvf_err_release_regions;
+ }
+
+ /* MAP PF's configuration registers */
+ cptvf->reg_base = pcim_iomap(pdev, 0, 0);
+ if (!cptvf->reg_base) {
+ dev_err(dev, "Cannot map config register space, aborting\n");
+ err = -ENOMEM;
+ goto cptvf_err_release_regions;
+ }
+
+ cptvf->node = cptvf_get_node_id(pdev);
+ /* Enable MSI-X */
+ err = cptvf_enable_msix(cptvf);
+ if (err) {
+ dev_err(dev, "cptvf_enable_msix() failed");
+ goto cptvf_err_release_regions;
+ }
+
+ /* Register mailbox interrupts */
+ cptvf_register_misc_intr(cptvf);
+
+ /* Check ready with PF */
+ /* Gets chip ID / device Id from PF if ready */
+ err = cptvf_check_pf_ready(cptvf);
+ if (err) {
+ dev_err(dev, "PF not responding to READY msg");
+ err = -EBUSY;
+ goto cptvf_err_release_regions;
+ }
+
+ /* CPT VF software resources initialization */
+ cptvf->cqinfo.qchunksize = CPT_CMD_QCHUNK_SIZE;
+ err = cptvf_sw_init(cptvf, CPT_CMD_QLEN, CPT_NUM_QS_PER_VF);
+ if (err) {
+ dev_err(dev, "cptvf_sw_init() failed");
+ goto cptvf_err_release_regions;
+ }
+ /* Convey VQ LEN to PF */
+ err = cptvf_send_vq_size_msg(cptvf);
+ if (err) {
+ dev_err(dev, "PF not responding to QLEN msg");
+ err = -EBUSY;
+ goto cptvf_err_release_regions;
+ }
+
+ /* CPT VF device initialization */
+ cptvf_device_init(cptvf);
+ /* Send msg to PF to assign currnet Q to required group */
+ cptvf->vfgrp = 1;
+ err = cptvf_send_vf_to_grp_msg(cptvf);
+ if (err) {
+ dev_err(dev, "PF not responding to VF_GRP msg");
+ err = -EBUSY;
+ goto cptvf_err_release_regions;
+ }
+
+ cptvf->priority = 1;
+ err = cptvf_send_vf_priority_msg(cptvf);
+ if (err) {
+ dev_err(dev, "PF not responding to VF_PRIO msg");
+ err = -EBUSY;
+ goto cptvf_err_release_regions;
+ }
+ /* Register DONE interrupts */
+ err = cptvf_register_done_intr(cptvf);
+ if (err)
+ goto cptvf_err_release_regions;
+
+ /* Set irq affinity masks */
+ cptvf_set_irq_affinity(cptvf);
+ /* Convey UP to PF */
+ err = cptvf_send_vf_up(cptvf);
+ if (err) {
+ dev_err(dev, "PF not responding to UP msg");
+ err = -EBUSY;
+ goto cptvf_up_fail;
+ }
+ err = cvm_crypto_init(cptvf);
+ if (err) {
+ dev_err(dev, "Algorithm register failed\n");
+ err = -EBUSY;
+ goto cptvf_up_fail;
+ }
+ return 0;
+
+cptvf_up_fail:
+ cptvf_unregister_interrupts(cptvf);
+cptvf_err_release_regions:
+ pci_release_regions(pdev);
+cptvf_err_disable_device:
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+
+ return err;
+}
+
+static void cptvf_remove(struct pci_dev *pdev)
+{
+ struct cpt_vf *cptvf = pci_get_drvdata(pdev);
+
+ if (!cptvf)
+ pr_err("Invalid CPT-VF device\n");
+
+ /* Convey DOWN to PF */
+ if (cptvf_send_vf_down(cptvf)) {
+ pr_err("PF not responding to DOWN msg");
+ } else {
+ cptvf_unregister_interrupts(cptvf);
+ cptvf_sw_cleanup(cptvf);
+ pci_set_drvdata(pdev, NULL);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ cvm_crypto_exit();
+ }
+}
+
+static void cptvf_shutdown(struct pci_dev *pdev)
+{
+ cptvf_remove(pdev);
+}
+
+/* Supported devices */
+static const struct pci_device_id cptvf_id_table[] = {
+ {PCI_VDEVICE(CAVIUM, CPT_81XX_PCI_VF_DEVICE_ID), 0},
+ { 0, } /* end of table */
+};
+
+static struct pci_driver cptvf_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = cptvf_id_table,
+ .probe = cptvf_probe,
+ .remove = cptvf_remove,
+ .shutdown = cptvf_shutdown,
+};
+
+static s32 __init cptvf_init_module(void)
+{
+ s32 ret = -1;
+
+ pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION);
+
+ ret = pci_register_driver(&cptvf_pci_driver);
+ if (ret)
+ pr_err("pci_register_driver() failed");
+
+ return ret;
+}
+
+static void __exit cptvf_cleanup_module(void)
+{
+ pci_unregister_driver(&cptvf_pci_driver);
+}
+
+module_init(cptvf_init_module);
+module_exit(cptvf_cleanup_module);
+
+MODULE_AUTHOR("George Cherian <[email protected]>, Murthy Nidadavolu");
+MODULE_DESCRIPTION("Cavium Thunder CPT Virtual Function Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DEVICE_TABLE(pci, cptvf_id_table);
diff --git a/drivers/crypto/cavium/cpt/cptvf_mbox.c b/drivers/crypto/cavium/cpt/cptvf_mbox.c
new file mode 100644
index 0000000..7a8964b
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptvf_mbox.c
@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#include "cptvf.h"
+
+static void cptvf_send_msg_to_pf(struct cpt_vf *cptvf, struct cpt_mbox *mbx)
+{
+ /* Writing mbox(1) causes interrupt */
+ cpt_write_csr64(cptvf->reg_base, CPTX_VFX_PF_MBOXX(0, 0, 0),
+ mbx->msg);
+ cpt_write_csr64(cptvf->reg_base, CPTX_VFX_PF_MBOXX(0, 0, 1),
+ mbx->data);
+}
+
+/* ACKs PF's mailbox message
+ */
+void cptvf_mbox_send_ack(struct cpt_vf *cptvf, struct cpt_mbox *mbx)
+{
+ mbx->msg = CPT_MBOX_MSG_TYPE_ACK;
+ cptvf_send_msg_to_pf(cptvf, mbx);
+}
+
+/* NACKs PF's mailbox message that VF is not able to
+ * complete the action
+ */
+void cptvf_mbox_send_nack(struct cpt_vf *cptvf, struct cpt_mbox *mbx)
+{
+ mbx->msg = CPT_MBOX_MSG_TYPE_NACK;
+ cptvf_send_msg_to_pf(cptvf, mbx);
+}
+
+/* Interrupt handler to handle mailbox messages from VFs */
+void cptvf_handle_mbox_intr(struct cpt_vf *cptvf)
+{
+ struct cpt_mbox mbx = {};
+
+ /*
+ * MBOX[0] contains msg
+ * MBOX[1] contains data
+ */
+ mbx.msg = cpt_read_csr64(cptvf->reg_base, CPTX_VFX_PF_MBOXX(0, 0, 0));
+ mbx.data = cpt_read_csr64(cptvf->reg_base, CPTX_VFX_PF_MBOXX(0, 0, 1));
+ dev_dbg(&cptvf->pdev->dev, "%s: Mailbox msg 0x%llx from PF\n",
+ __func__, mbx.msg);
+ switch (mbx.msg) {
+ case CPT_MSG_READY:
+ {
+ cptvf->pf_acked = true;
+ cptvf->vfid = mbx.data;
+ dev_dbg(&cptvf->pdev->dev, "Received VFID %d\n", cptvf->vfid);
+ break;
+ }
+ case CPT_MSG_QBIND_GRP:
+ cptvf->pf_acked = true;
+ cptvf->vftype = mbx.data;
+ dev_dbg(&cptvf->pdev->dev, "VF %d type %s group %d\n",
+ cptvf->vfid, ((mbx.data == SE_TYPES) ? "SE" : "AE"),
+ cptvf->vfgrp);
+ break;
+ case CPT_MBOX_MSG_TYPE_ACK:
+ cptvf->pf_acked = true;
+ break;
+ case CPT_MBOX_MSG_TYPE_NACK:
+ cptvf->pf_nacked = true;
+ break;
+ default:
+ dev_err(&cptvf->pdev->dev, "Invalid msg from PF, msg 0x%llx\n",
+ mbx.msg);
+ break;
+ }
+}
+
+static s32 cptvf_send_msg_to_pf_timeout(struct cpt_vf *cptvf,
+ struct cpt_mbox *mbx)
+{
+ s32 timeout = CPT_MBOX_MSG_TIMEOUT;
+ s32 sleep = 10;
+
+ cptvf->pf_acked = false;
+ cptvf->pf_nacked = false;
+ cptvf_send_msg_to_pf(cptvf, mbx);
+ /* Wait for previous message to be acked, timeout 2sec */
+ while (!cptvf->pf_acked) {
+ if (cptvf->pf_nacked)
+ return -EINVAL;
+ msleep(sleep);
+ if (cptvf->pf_acked)
+ break;
+ timeout -= sleep;
+ if (!timeout) {
+ dev_err(&cptvf->pdev->dev, "PF didn't ack to mbox msg %llx from VF%u\n",
+ (mbx->msg & 0xFF), cptvf->vfid);
+ return -EBUSY;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Checks if VF is able to comminicate with PF
+ * and also gets the CPT number this VF is associated to.
+ */
+s32 cptvf_check_pf_ready(struct cpt_vf *cptvf)
+{
+ struct cpt_mbox mbx = {};
+
+ mbx.msg = CPT_MSG_READY;
+ if (cptvf_send_msg_to_pf_timeout(cptvf, &mbx)) {
+ dev_err(&cptvf->pdev->dev, "PF didn't respond to READY msg\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Communicate VQs size to PF to program CPT(0)_PF_Q(0-15)_CTL of the VF.
+ * Must be ACKed.
+ */
+s32 cptvf_send_vq_size_msg(struct cpt_vf *cptvf)
+{
+ struct cpt_mbox mbx = {};
+
+ mbx.msg = CPT_MSG_QLEN;
+ mbx.data = cptvf->qsize;
+ if (cptvf_send_msg_to_pf_timeout(cptvf, &mbx)) {
+ dev_err(&cptvf->pdev->dev, "PF didn't respond to vq_size msg\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Communicate VF group required to PF and get the VQ binded to that group
+ */
+s32 cptvf_send_vf_to_grp_msg(struct cpt_vf *cptvf)
+{
+ struct cpt_mbox mbx = {};
+
+ mbx.msg = CPT_MSG_QBIND_GRP;
+ /* Convey group of the VF */
+ mbx.data = cptvf->vfgrp;
+ if (cptvf_send_msg_to_pf_timeout(cptvf, &mbx)) {
+ dev_err(&cptvf->pdev->dev, "PF didn't respond to vf_type msg\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Communicate VF group required to PF and get the VQ binded to that group
+ */
+s32 cptvf_send_vf_priority_msg(struct cpt_vf *cptvf)
+{
+ struct cpt_mbox mbx = {};
+
+ mbx.msg = CPT_MSG_VQ_PRIORITY;
+ /* Convey group of the VF */
+ mbx.data = cptvf->priority;
+ if (cptvf_send_msg_to_pf_timeout(cptvf, &mbx)) {
+ dev_err(&cptvf->pdev->dev, "PF didn't respond to vf_type msg\n");
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * Communicate to PF that VF is UP and running
+ */
+s32 cptvf_send_vf_up(struct cpt_vf *cptvf)
+{
+ struct cpt_mbox mbx = {};
+
+ mbx.msg = CPT_MSG_VF_UP;
+ if (cptvf_send_msg_to_pf_timeout(cptvf, &mbx)) {
+ dev_err(&cptvf->pdev->dev, "PF didn't respond to UP msg\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Communicate to PF that VF is DOWN and running
+ */
+s32 cptvf_send_vf_down(struct cpt_vf *cptvf)
+{
+ struct cpt_mbox mbx = {};
+
+ mbx.msg = CPT_MSG_VF_DOWN;
+ if (cptvf_send_msg_to_pf_timeout(cptvf, &mbx)) {
+ dev_err(&cptvf->pdev->dev, "PF didn't respond to DOWN msg\n");
+ return 1;
+ }
+
+ return 0;
+}
diff --git a/drivers/crypto/cavium/cpt/cptvf_reqmanager.c b/drivers/crypto/cavium/cpt/cptvf_reqmanager.c
new file mode 100644
index 0000000..c8d0e01
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptvf_reqmanager.c
@@ -0,0 +1,581 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#include "cptvf.h"
+#include "request_manager.h"
+
+/**
+ * get_free_pending_entry - get free entry from pending queue
+ * @param pqinfo: pending_qinfo structure
+ * @param qno: queue number
+ */
+static struct pending_entry *get_free_pending_entry(struct pending_queue *q,
+ s32 qlen)
+{
+ struct pending_entry *ent = NULL;
+
+ ent = &q->head[q->rear];
+ if (unlikely(ent->busy)) {
+ ent = NULL;
+ goto no_free_entry;
+ }
+
+ q->rear++;
+ if (unlikely(q->rear == qlen))
+ q->rear = 0;
+
+no_free_entry:
+ return ent;
+}
+
+static inline void pending_queue_inc_front(struct pending_qinfo *pqinfo,
+ s32 qno)
+{
+ struct pending_queue *queue = &pqinfo->queue[qno];
+
+ queue->front++;
+ if (unlikely(queue->front == pqinfo->qlen))
+ queue->front = 0;
+}
+
+static s32 setup_sgio_components(struct cpt_vf *cptvf, struct buf_ptr *list,
+ s32 buf_count, u8 *buffer)
+{
+ s32 ret = 0, i, j;
+ s32 components;
+ struct sglist_component *sg_ptr = NULL;
+ struct pci_dev *pdev = cptvf->pdev;
+
+ if (unlikely(!list)) {
+ pr_err("Input List pointer is NULL\n");
+ ret = -EFAULT;
+ return ret;
+ }
+
+ for (i = 0; i < buf_count; i++) {
+ if (likely(list[i].vptr)) {
+ list[i].dma_addr = dma_map_single(&pdev->dev,
+ list[i].vptr,
+ list[i].size,
+ DMA_BIDIRECTIONAL);
+ if (unlikely(dma_mapping_error(&pdev->dev,
+ list[i].dma_addr))) {
+ pr_err("DMA map kernel buffer failed for component: %d\n",
+ i);
+ ret = -EIO;
+ goto sg_cleanup;
+ }
+ }
+ }
+
+ components = buf_count / 4;
+ sg_ptr = (struct sglist_component *)buffer;
+ for (i = 0; i < components; i++) {
+ sg_ptr->u.s.len0 = cpu_to_be16(list[i * 4 + 0].size);
+ sg_ptr->u.s.len1 = cpu_to_be16(list[i * 4 + 1].size);
+ sg_ptr->u.s.len2 = cpu_to_be16(list[i * 4 + 2].size);
+ sg_ptr->u.s.len3 = cpu_to_be16(list[i * 4 + 3].size);
+ sg_ptr->ptr0 = cpu_to_be64(list[i * 4 + 0].dma_addr);
+ sg_ptr->ptr1 = cpu_to_be64(list[i * 4 + 1].dma_addr);
+ sg_ptr->ptr2 = cpu_to_be64(list[i * 4 + 2].dma_addr);
+ sg_ptr->ptr3 = cpu_to_be64(list[i * 4 + 3].dma_addr);
+ sg_ptr++;
+ }
+
+ components = buf_count % 4;
+
+ switch (components) {
+ case 3:
+ sg_ptr->u.s.len2 = cpu_to_be16(list[i * 4 + 2].size);
+ sg_ptr->ptr2 = cpu_to_be64(list[i * 4 + 2].dma_addr);
+ /* Fall through */
+ case 2:
+ sg_ptr->u.s.len1 = cpu_to_be16(list[i * 4 + 1].size);
+ sg_ptr->ptr1 = cpu_to_be64(list[i * 4 + 1].dma_addr);
+ /* Fall through */
+ case 1:
+ sg_ptr->u.s.len0 = cpu_to_be16(list[i * 4 + 0].size);
+ sg_ptr->ptr0 = cpu_to_be64(list[i * 4 + 0].dma_addr);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+
+sg_cleanup:
+ for (j = 0; j < i; j++) {
+ if (list[j].dma_addr) {
+ dma_unmap_single(&pdev->dev, list[i].dma_addr,
+ list[i].size, DMA_BIDIRECTIONAL);
+ }
+
+ list[j].dma_addr = 0;
+ }
+
+ return ret;
+}
+
+static inline s32 setup_sgio_list(struct cpt_vf *cptvf,
+ struct cpt_info_buffer *info,
+ struct cpt_request_info *req)
+{
+ u16 g_sz_bytes = 0, s_sz_bytes = 0;
+ s32 ret = 0;
+ struct pci_dev *pdev = cptvf->pdev;
+
+ if (req->incnt > MAX_SG_IN_CNT || req->outcnt > MAX_SG_OUT_CNT) {
+ pr_err("Requestes SG components are higher than supported\n");
+ ret = -EINVAL;
+ goto scatter_gather_clean;
+ }
+
+ /* Setup gather (input) components */
+ g_sz_bytes = ((req->incnt + 3) / 4) * sizeof(struct sglist_component);
+ info->gather_components = kzalloc((g_sz_bytes), GFP_KERNEL);
+ if (!info->gather_components) {
+ ret = -ENOMEM;
+ goto scatter_gather_clean;
+ }
+
+ ret = setup_sgio_components(cptvf, req->in,
+ req->incnt,
+ info->gather_components);
+ if (ret) {
+ pr_err("Failed to setup gather list\n");
+ ret = -EFAULT;
+ goto scatter_gather_clean;
+ }
+
+ /* Setup scatter (output) components */
+ s_sz_bytes = ((req->outcnt + 3) / 4) * sizeof(struct sglist_component);
+ info->scatter_components = kzalloc((s_sz_bytes), GFP_KERNEL);
+ if (!info->scatter_components) {
+ ret = -ENOMEM;
+ goto scatter_gather_clean;
+ }
+
+ ret = setup_sgio_components(cptvf, req->out,
+ req->outcnt,
+ info->scatter_components);
+ if (ret) {
+ pr_err("Failed to setup gather list\n");
+ ret = -EFAULT;
+ goto scatter_gather_clean;
+ }
+
+ /* Create and initialize DPTR */
+ info->dlen = g_sz_bytes + s_sz_bytes + SG_LIST_HDR_SIZE;
+ info->in_buffer = kzalloc((info->dlen), GFP_KERNEL);
+ if (!info->in_buffer) {
+ ret = -ENOMEM;
+ goto scatter_gather_clean;
+ }
+
+ ((u16 *)info->in_buffer)[0] = req->outcnt;
+ ((u16 *)info->in_buffer)[1] = req->incnt;
+ ((u16 *)info->in_buffer)[2] = 0;
+ ((u16 *)info->in_buffer)[3] = 0;
+ *(u64 *)info->in_buffer = cpu_to_be64p((u64 *)info->in_buffer);
+
+ memcpy(&info->in_buffer[8], info->gather_components,
+ g_sz_bytes);
+ memcpy(&info->in_buffer[8 + g_sz_bytes],
+ info->scatter_components, s_sz_bytes);
+
+ info->dptr_baddr = dma_map_single(&pdev->dev,
+ (void *)info->in_buffer,
+ info->dlen,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&pdev->dev, info->dptr_baddr)) {
+ pr_err("Mapping DPTR Failed %d\n", info->dlen);
+ ret = -EIO;
+ goto scatter_gather_clean;
+ }
+
+ /* Create and initialize RPTR */
+ info->out_buffer = kzalloc((COMPLETION_CODE_SIZE), GFP_KERNEL);
+ if (!info->out_buffer) {
+ ret = -ENOMEM;
+ goto scatter_gather_clean;
+ }
+
+ *((u64 *)info->out_buffer) = ~((u64)COMPLETION_CODE_INIT);
+ info->alternate_caddr = (u64 *)info->out_buffer;
+ info->rptr_baddr = dma_map_single(&pdev->dev,
+ (void *)info->out_buffer,
+ COMPLETION_CODE_SIZE,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&pdev->dev, info->rptr_baddr)) {
+ pr_err("Mapping RPTR Failed %d\n", COMPLETION_CODE_SIZE);
+ ret = -EIO;
+ goto scatter_gather_clean;
+ }
+
+ return 0;
+
+scatter_gather_clean:
+ return ret;
+}
+
+s32 send_cpt_command(struct cpt_vf *cptvf, union cpt_inst_s *cmd,
+ u32 qno)
+{
+ struct command_qinfo *qinfo = NULL;
+ struct command_queue *queue;
+ struct command_chunk *chunk;
+ u8 *ent;
+ s32 ret = 0;
+
+ if (unlikely(qno >= cptvf->nr_queues)) {
+ pr_err("Invalid queue (qno: %d, nr_queues: %d)\n",
+ qno, cptvf->nr_queues);
+ return -EINVAL;
+ }
+
+ qinfo = &cptvf->cqinfo;
+ queue = &qinfo->queue[qno];
+ /* lock commad queue */
+ spin_lock(&queue->lock);
+ ent = &queue->qhead->head[queue->idx * qinfo->cmd_size];
+ memcpy(ent, (void *)cmd, qinfo->cmd_size);
+
+ if (++queue->idx >= queue->qhead->size / 64) {
+ struct hlist_node *node;
+
+ hlist_for_each(node, &queue->chead) {
+ chunk = hlist_entry(node, struct command_chunk,
+ nextchunk);
+ if (chunk == queue->qhead) {
+ continue;
+ } else {
+ queue->qhead = chunk;
+ break;
+ }
+ }
+ queue->idx = 0;
+ }
+ /* make sure all memory stores are done before ringing doorbell */
+ smp_wmb();
+ cptvf_write_vq_doorbell(cptvf, 1);
+ /* unlock command queue */
+ spin_unlock(&queue->lock);
+
+ return ret;
+}
+
+void do_request_cleanup(struct cpt_vf *cptvf,
+ struct cpt_info_buffer *info)
+{
+ s32 i;
+ struct pci_dev *pdev = cptvf->pdev;
+ struct cpt_request_info *req;
+
+ if (info->dptr_baddr)
+ dma_unmap_single(&pdev->dev, info->dptr_baddr,
+ info->dlen, DMA_BIDIRECTIONAL);
+
+ if (info->rptr_baddr)
+ dma_unmap_single(&pdev->dev, info->rptr_baddr,
+ COMPLETION_CODE_SIZE, DMA_BIDIRECTIONAL);
+
+ if (info->comp_baddr)
+ dma_unmap_single(&pdev->dev, info->comp_baddr,
+ sizeof(union cpt_res_s), DMA_BIDIRECTIONAL);
+
+ if (info->req) {
+ req = info->req;
+ for (i = 0; i < req->outcnt; i++) {
+ if (req->out[i].dma_addr)
+ dma_unmap_single(&pdev->dev,
+ req->out[i].dma_addr,
+ req->out[i].size,
+ DMA_BIDIRECTIONAL);
+ }
+
+ for (i = 0; i < req->incnt; i++) {
+ if (req->in[i].dma_addr)
+ dma_unmap_single(&pdev->dev,
+ req->in[i].dma_addr,
+ req->in[i].size,
+ DMA_BIDIRECTIONAL);
+ }
+ }
+
+ if (info->scatter_components)
+ kzfree(info->scatter_components);
+
+ if (info->gather_components)
+ kzfree(info->gather_components);
+
+ if (info->out_buffer)
+ kzfree(info->out_buffer);
+
+ if (info->in_buffer)
+ kzfree(info->in_buffer);
+
+ if (info->completion_addr)
+ kzfree((void *)info->completion_addr);
+
+ kzfree(info);
+}
+
+void do_post_process(struct cpt_vf *cptvf, struct cpt_info_buffer *info)
+{
+ if (!info || !cptvf) {
+ pr_err("Input params are incorrect for post processing\n");
+ return;
+ }
+
+ do_request_cleanup(cptvf, info);
+}
+
+static inline void process_pending_queue(struct cpt_vf *cptvf,
+ struct pending_qinfo *pqinfo,
+ s32 qno)
+{
+ struct pending_queue *pqueue = &pqinfo->queue[qno];
+ struct pending_entry *pentry = NULL;
+ struct cpt_info_buffer *info = NULL;
+ union cpt_res_s *status = NULL;
+
+ while (1) {
+ spin_lock_bh(&pqueue->lock);
+ pentry = &pqueue->head[pqueue->front];
+ if (unlikely(!pentry->busy)) {
+ spin_unlock_bh(&pqueue->lock);
+ break;
+ }
+
+ info = (struct cpt_info_buffer *)pentry->post_arg;
+ if (unlikely(!info)) {
+ pr_err("Pending Entry post arg NULL\n");
+ pending_queue_inc_front(pqinfo, qno);
+ spin_unlock_bh(&pqueue->lock);
+ continue;
+ }
+
+ status = (union cpt_res_s *)pentry->completion_addr;
+ if ((status->s.compcode == CPT_COMP_E_FAULT) ||
+ (status->s.compcode == CPT_COMP_E_SWERR)) {
+ pr_err("Request failed with %s\n",
+ (status->s.compcode == CPT_COMP_E_FAULT) ?
+ "DMA Fault" : "Software error");
+ pentry->completion_addr = NULL;
+ pentry->busy = false;
+ atomic64_dec((&pqueue->pending_count));
+ pentry->post_arg = NULL;
+ pending_queue_inc_front(pqinfo, qno);
+ do_request_cleanup(cptvf, info);
+ spin_unlock_bh(&pqueue->lock);
+ break;
+ } else if (status->s.compcode == COMPLETION_CODE_INIT) {
+ /* check for timeout */
+ if (time_after_eq(jiffies,
+ (info->time_in +
+ (CPT_COMMAND_TIMEOUT * HZ)))) {
+ pr_err("Request timed out");
+ pentry->completion_addr = NULL;
+ pentry->busy = false;
+ atomic64_dec((&pqueue->pending_count));
+ pentry->post_arg = NULL;
+ pending_queue_inc_front(pqinfo, qno);
+ do_request_cleanup(cptvf, info);
+ spin_unlock_bh(&pqueue->lock);
+ break;
+ } else if ((*info->alternate_caddr ==
+ (~COMPLETION_CODE_INIT)) &&
+ (info->extra_time < TIME_IN_RESET_COUNT)) {
+ info->time_in = jiffies;
+ info->extra_time++;
+ spin_unlock_bh(&pqueue->lock);
+ break;
+ }
+ }
+
+ pentry->completion_addr = NULL;
+ pentry->busy = false;
+ pentry->post_arg = NULL;
+ atomic64_dec((&pqueue->pending_count));
+ pending_queue_inc_front(pqinfo, qno);
+ spin_unlock_bh(&pqueue->lock);
+
+ do_post_process(info->cptvf, info);
+ /*
+ * Calling callback after we find
+ * that the request has been serviced
+ */
+ pentry->callback(status->s.compcode, pentry->callback_arg);
+ }
+}
+
+s32 process_request(struct cpt_vf *cptvf, struct cpt_request_info *req)
+{
+ s32 ret = 0, clear = 0, queue = 0;
+ struct cpt_info_buffer *info = NULL;
+ struct cptvf_request *cpt_req = NULL;
+ union ctrl_info *ctrl = NULL;
+ struct pending_entry *pentry = NULL;
+ struct pending_queue *pqueue = NULL;
+ struct pci_dev *pdev = cptvf->pdev;
+ u8 group = 0;
+ struct cpt_vq_command vq_cmd;
+ union cpt_inst_s cptinst;
+
+ if (unlikely(!cptvf || !req)) {
+ pr_err("Invalid inputs (cptvf: %p, req: %p)\n", cptvf, req);
+ return -EINVAL;
+ }
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL | GFP_ATOMIC);
+ if (unlikely(!info)) {
+ pr_err("Unable to allocate memory for info_buffer\n");
+ return -ENOMEM;
+ }
+
+ cpt_req = (struct cptvf_request *)&req->req;
+ ctrl = (union ctrl_info *)&req->ctrl;
+
+ info->cptvf = cptvf;
+ group = ctrl->s.grp;
+ ret = setup_sgio_list(cptvf, info, req);
+ if (ret) {
+ pr_err("Setting up SG list failed");
+ goto request_cleanup;
+ }
+
+ cpt_req->dlen = info->dlen;
+ /*
+ * Get buffer for union cpt_res_s response
+ * structure and its physical address
+ */
+ info->completion_addr = kzalloc(sizeof(union cpt_res_s),
+ GFP_KERNEL | GFP_ATOMIC);
+ *((u8 *)(info->completion_addr)) = COMPLETION_CODE_INIT;
+ info->comp_baddr = dma_map_single(&pdev->dev,
+ (void *)info->completion_addr,
+ sizeof(union cpt_res_s),
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&pdev->dev, info->comp_baddr)) {
+ pr_err("mapping compptr Failed %lu\n", sizeof(union cpt_res_s));
+ ret = -EFAULT;
+ goto request_cleanup;
+ }
+
+ /* Fill the VQ command */
+ vq_cmd.cmd.u64 = 0;
+ vq_cmd.cmd.s.opcode = cpu_to_be16(cpt_req->opcode.flags);
+ vq_cmd.cmd.s.param1 = cpu_to_be16(cpt_req->param1);
+ vq_cmd.cmd.s.param2 = cpu_to_be16(cpt_req->param2);
+ vq_cmd.cmd.s.dlen = cpu_to_be16(cpt_req->dlen);
+
+ /* 64-bit swap for microcode data reads, not needed for addresses*/
+ vq_cmd.cmd.u64 = cpu_to_be64(vq_cmd.cmd.u64);
+ vq_cmd.dptr = info->dptr_baddr;
+ vq_cmd.rptr = info->rptr_baddr;
+ vq_cmd.cptr.u64 = 0;
+ vq_cmd.cptr.s.grp = group;
+ /* Get Pending Entry to submit command */
+ /* Always queue 0, because 1 queue per VF */
+ queue = 0;
+ pqueue = &cptvf->pqinfo.queue[queue];
+
+ if (atomic64_read(&pqueue->pending_count) > PENDING_THOLD) {
+ pr_err("pending threshold reached\n");
+ process_pending_queue(cptvf, &cptvf->pqinfo, queue);
+ }
+
+get_pending_entry:
+ spin_lock_bh(&pqueue->lock);
+ pentry = get_free_pending_entry(pqueue, cptvf->pqinfo.qlen);
+ if (unlikely(!pentry)) {
+ spin_unlock_bh(&pqueue->lock);
+ if (clear == 0) {
+ process_pending_queue(cptvf, &cptvf->pqinfo, queue);
+ clear = 1;
+ goto get_pending_entry;
+ }
+ pr_err("Get free entry failed\n");
+ pr_err("queue: %d, rear: %d, front: %d\n",
+ queue, pqueue->rear, pqueue->front);
+ ret = -EFAULT;
+ goto request_cleanup;
+ }
+
+ pentry->completion_addr = info->completion_addr;
+ pentry->post_arg = (void *)info;
+ pentry->callback = req->callback;
+ pentry->callback_arg = req->callback_arg;
+ info->pentry = pentry;
+ pentry->busy = true;
+ atomic64_inc(&pqueue->pending_count);
+
+ /* Send CPT command */
+ info->pentry = pentry;
+ info->time_in = jiffies;
+ info->req = req;
+
+ /* Create the CPT_INST_S type command for HW intrepretation */
+ cptinst.s.doneint = true;
+ cptinst.s.res_addr = (u64)info->comp_baddr;
+ cptinst.s.tag = 0;
+ cptinst.s.grp = 0;
+ cptinst.s.wq_ptr = 0;
+ cptinst.s.ei0 = vq_cmd.cmd.u64;
+ cptinst.s.ei1 = vq_cmd.dptr;
+ cptinst.s.ei2 = vq_cmd.rptr;
+ cptinst.s.ei3 = vq_cmd.cptr.u64;
+
+ ret = send_cpt_command(cptvf, &cptinst, queue);
+ spin_unlock_bh(&pqueue->lock);
+ if (unlikely(ret)) {
+ spin_unlock_bh(&pqueue->lock);
+ pr_err("Send command failed for AE\n");
+ ret = -EFAULT;
+ goto request_cleanup;
+ }
+
+ return 0;
+
+request_cleanup:
+ pr_debug("Failed to submit CPT command\n");
+ do_request_cleanup(cptvf, info);
+
+ return ret;
+}
+
+void vq_post_process(struct cpt_vf *cptvf, u32 qno)
+{
+ if (unlikely(qno > cptvf->nr_queues)) {
+ pr_err("Request for post processing on invalid pending queue: %u\n",
+ qno);
+ return;
+ }
+
+ process_pending_queue(cptvf, &cptvf->pqinfo, qno);
+}
+
+s32 cptvf_do_request(void *vfdev, struct cpt_request_info *req)
+{
+ struct cpt_vf *cptvf = (struct cpt_vf *)vfdev;
+
+ if (!cpt_device_ready(cptvf)) {
+ pr_err("CPT Device is not ready");
+ return -ENODEV;
+ }
+
+ if ((cptvf->vftype == SE_TYPES) && (!req->ctrl.s.se_req)) {
+ pr_err("CPTVF-%d of SE TYPE got AE request", cptvf->vfid);
+ return -EINVAL;
+ } else if ((cptvf->vftype == AE_TYPES) && (req->ctrl.s.se_req)) {
+ pr_err("CPTVF-%d of AE TYPE got SE request", cptvf->vfid);
+ return -EINVAL;
+ }
+
+ return process_request(cptvf, req);
+}
diff --git a/drivers/crypto/cavium/cpt/request_manager.h b/drivers/crypto/cavium/cpt/request_manager.h
new file mode 100644
index 0000000..6242b6f
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/request_manager.h
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#ifndef __REQUEST_MANGER_H
+#define __REQUEST_MANGER_H
+
+#include "cpt_common.h"
+
+#define TIME_IN_RESET_COUNT 5
+#define COMPLETION_CODE_SIZE 8
+#define COMPLETION_CODE_INIT 0
+#define PENDING_THOLD 100
+#define MAX_SG_IN_CNT 12
+#define MAX_SG_OUT_CNT 13
+#define SG_LIST_HDR_SIZE 8
+#define MAX_BUF_CNT 16
+
+union ctrl_info {
+ u32 flags;
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u32 reserved0:26;
+ u32 grp:3; /**< Group bits */
+ u32 dma_mode:2; /**< DMA mode */
+ u32 se_req:1;/**< To SE core */
+#else
+ u32 se_req:1; /**< To SE core */
+ u32 dma_mode:2; /**< DMA mode */
+ u32 grp:3; /* Group bits */
+ u32 reserved0:26;
+#endif
+ } s;
+};
+
+union opcode_info {
+ u16 flags;
+ struct {
+ u8 major;
+ u8 minor;
+ } s;
+};
+
+struct cptvf_request {
+ union opcode_info opcode;
+ u16 param1;
+ u16 param2;
+ u16 dlen;
+};
+
+struct buf_ptr {
+ u8 *vptr;
+ dma_addr_t dma_addr;
+ u16 size;
+};
+
+struct cpt_request_info {
+ u8 incnt; /**< Number of input buffers */
+ u8 outcnt; /**< Number of output buffers */
+ u16 rlen; /**< Output length */
+ union ctrl_info ctrl; /**< User control information */
+ struct cptvf_request req; /**< Request Information (Core specific) */
+
+ struct buf_ptr in[MAX_BUF_CNT];
+ struct buf_ptr out[MAX_BUF_CNT];
+
+ void (*callback)(int, void *); /**< Kernel ASYNC request callabck */
+ void *callback_arg; /**< Kernel ASYNC request callabck arg */
+};
+
+struct sglist_component {
+ union {
+ u64 len;
+ struct {
+ u16 len0;
+ u16 len1;
+ u16 len2;
+ u16 len3;
+ } s;
+ } u;
+ u64 ptr0;
+ u64 ptr1;
+ u64 ptr2;
+ u64 ptr3;
+};
+
+struct cpt_info_buffer {
+ struct cpt_vf *cptvf;
+ unsigned long time_in;
+ u8 extra_time;
+
+ struct cpt_request_info *req;
+ dma_addr_t dptr_baddr;
+ u32 dlen;
+ dma_addr_t rptr_baddr;
+ dma_addr_t comp_baddr;
+ u8 *in_buffer;
+ u8 *out_buffer;
+ u8 *gather_components;
+ u8 *scatter_components;
+
+ struct pending_entry *pentry;
+ volatile u64 *completion_addr;
+ volatile u64 *alternate_caddr;
+};
+
+/*
+ * CPT_INST_S software command definitions
+ * Words EI (0-3)
+ */
+union vq_cmd_word0 {
+ u64 u64;
+ struct {
+ u16 opcode;
+ u16 param1;
+ u16 param2;
+ u16 dlen;
+ } s;
+};
+
+union vq_cmd_word3 {
+ u64 u64;
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u64 grp:3;
+ u64 cptr:61;
+#else
+ u64 cptr:61;
+ u64 grp:3;
+#endif
+ } s;
+};
+
+struct cpt_vq_command {
+ union vq_cmd_word0 cmd;
+ u64 dptr;
+ u64 rptr;
+ union vq_cmd_word3 cptr;
+};
+
+void vq_post_process(struct cpt_vf *cptvf, u32 qno);
+s32 process_request(struct cpt_vf *cptvf, struct cpt_request_info *req);
+#endif /* __REQUEST_MANGER_H */
--
2.1.4
Add the CPT options in crypto Kconfig and update the
crypto Makefile
Signed-off-by: George Cherian <[email protected]>
---
drivers/crypto/Kconfig | 1 +
drivers/crypto/Makefile | 1 +
2 files changed, 2 insertions(+)
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 4d2b81f..15f9040 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -484,6 +484,7 @@ config CRYPTO_DEV_MXS_DCP
will be called mxs-dcp.
source "drivers/crypto/qat/Kconfig"
+source "drivers/crypto/cavium/cpt/Kconfig"
config CRYPTO_DEV_QCE
tristate "Qualcomm crypto engine accelerator"
diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
index ad7250f..dd33290 100644
--- a/drivers/crypto/Makefile
+++ b/drivers/crypto/Makefile
@@ -32,3 +32,4 @@ obj-$(CONFIG_CRYPTO_DEV_VMX) += vmx/
obj-$(CONFIG_CRYPTO_DEV_SUN4I_SS) += sunxi-ss/
obj-$(CONFIG_CRYPTO_DEV_ROCKCHIP) += rockchip/
obj-$(CONFIG_CRYPTO_DEV_CHELSIO) += chelsio/
+obj-$(CONFIG_CRYPTO_DEV_CPT) += cavium/cpt/
--
2.1.4
Enable the Physical Function diver for the Cavium Crypto Engine (CPT)
found in Octeon-tx series of SoC's. CPT is the Cryptographic Acceleration
Unit. CPT includes microcoded GigaCypher symmetric engines (SEs) and
asymmetric engines (AEs).
Signed-off-by: George Cherian <[email protected]>
---
drivers/crypto/cavium/cpt/Kconfig | 16 +
drivers/crypto/cavium/cpt/Makefile | 2 +
drivers/crypto/cavium/cpt/cpt_common.h | 166 +++++++
drivers/crypto/cavium/cpt/cpt_hw_types.h | 736 +++++++++++++++++++++++++++++++
drivers/crypto/cavium/cpt/cptpf.h | 69 +++
drivers/crypto/cavium/cpt/cptpf_main.c | 733 ++++++++++++++++++++++++++++++
drivers/crypto/cavium/cpt/cptpf_mbox.c | 163 +++++++
7 files changed, 1885 insertions(+)
create mode 100644 drivers/crypto/cavium/cpt/Kconfig
create mode 100644 drivers/crypto/cavium/cpt/Makefile
create mode 100644 drivers/crypto/cavium/cpt/cpt_common.h
create mode 100644 drivers/crypto/cavium/cpt/cpt_hw_types.h
create mode 100644 drivers/crypto/cavium/cpt/cptpf.h
create mode 100644 drivers/crypto/cavium/cpt/cptpf_main.c
create mode 100644 drivers/crypto/cavium/cpt/cptpf_mbox.c
diff --git a/drivers/crypto/cavium/cpt/Kconfig b/drivers/crypto/cavium/cpt/Kconfig
new file mode 100644
index 0000000..247f1cb
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/Kconfig
@@ -0,0 +1,16 @@
+#
+# Cavium crypto device configuration
+#
+
+config CRYPTO_DEV_CPT
+ tristate
+
+config CAVIUM_CPT
+ tristate "Cavium Cryptographic Accelerator driver"
+ depends on ARCH_THUNDER
+ select CRYPTO_DEV_CPT
+ help
+ Support for Cavium CPT block found in octeon-tx series of
+ processors.
+
+ To compile this as a module, choose M here.
diff --git a/drivers/crypto/cavium/cpt/Makefile b/drivers/crypto/cavium/cpt/Makefile
new file mode 100644
index 0000000..fe3d454
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_CAVIUM_CPT) += cptpf.o
+cptpf-objs := cptpf_main.o cptpf_mbox.o
diff --git a/drivers/crypto/cavium/cpt/cpt_common.h b/drivers/crypto/cavium/cpt/cpt_common.h
new file mode 100644
index 0000000..ae542f4
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cpt_common.h
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#ifndef __CPT_COMMON_H
+#define __CPT_COMMON_H
+
+#include <asm/byteorder.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+
+#include "cpt_hw_types.h"
+
+/* Device ID */
+#define CPT_81XX_PCI_PF_DEVICE_ID 0xa040
+#define CPT_81XX_PCI_VF_DEVICE_ID 0xa041
+
+/**< flags to indicate the features supported */
+#define CPT_FLAG_MSIX_ENABLED BIT(0)
+#define CPT_FLAG_SRIOV_ENABLED BIT(1)
+#define CPT_FLAG_VF_DRIVER BIT(2)
+#define CPT_FLAG_DEVICE_READY BIT(3)
+
+#define cpt_msix_enabled(cpt) ((cpt)->flags & CPT_FLAG_MSIX_ENABLED)
+#define cpt_sriov_enabled(cpt) ((cpt)->flags & CPT_FLAG_SRIOV_ENABLED)
+#define cpt_vf_driver(cpt) ((cpt)->flags & CPT_FLAG_VF_DRIVER)
+#define cpt_device_ready(cpt) ((cpt)->flags & CPT_FLAG_DEVICE_READY)
+
+#define CPT_MBOX_MSG_TYPE_ACK 1
+#define CPT_MBOX_MSG_TYPE_NACK 2
+#define CPT_MBOX_MSG_TIMEOUT 2000
+#define VF_STATE_DOWN 0
+#define VF_STATE_UP 1
+
+/*
+ * CPT Registers map for 81xx
+ */
+
+/* PF registers */
+#define CPTX_PF_CONSTANTS(a) (0x0ll + ((u64)(a) << 36))
+#define CPTX_PF_RESET(a) (0x100ll + ((u64)(a) << 36))
+#define CPTX_PF_DIAG(a) (0x120ll + ((u64)(a) << 36))
+#define CPTX_PF_BIST_STATUS(a) (0x160ll + ((u64)(a) << 36))
+#define CPTX_PF_ECC0_CTL(a) (0x200ll + ((u64)(a) << 36))
+#define CPTX_PF_ECC0_FLIP(a) (0x210ll + ((u64)(a) << 36))
+#define CPTX_PF_ECC0_INT(a) (0x220ll + ((u64)(a) << 36))
+#define CPTX_PF_ECC0_INT_W1S(a) (0x230ll + ((u64)(a) << 36))
+#define CPTX_PF_ECC0_ENA_W1S(a) (0x240ll + ((u64)(a) << 36))
+#define CPTX_PF_ECC0_ENA_W1C(a) (0x250ll + ((u64)(a) << 36))
+#define CPTX_PF_MBOX_INTX(a, b) \
+ (0x400ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_MBOX_INT_W1SX(a, b) \
+ (0x420ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_MBOX_ENA_W1CX(a, b) \
+ (0x440ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_MBOX_ENA_W1SX(a, b) \
+ (0x460ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_EXEC_INT(a) (0x500ll + 0x1000000000ll * ((a) & 0x1))
+#define CPTX_PF_EXEC_INT_W1S(a) (0x520ll + ((u64)(a) << 36))
+#define CPTX_PF_EXEC_ENA_W1C(a) (0x540ll + ((u64)(a) << 36))
+#define CPTX_PF_EXEC_ENA_W1S(a) (0x560ll + ((u64)(a) << 36))
+#define CPTX_PF_GX_EN(a, b) \
+ (0x600ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_EXEC_INFO(a) (0x700ll + ((u64)(a) << 36))
+#define CPTX_PF_EXEC_BUSY(a) (0x800ll + ((u64)(a) << 36))
+#define CPTX_PF_EXEC_INFO0(a) (0x900ll + ((u64)(a) << 36))
+#define CPTX_PF_EXEC_INFO1(a) (0x910ll + ((u64)(a) << 36))
+#define CPTX_PF_INST_REQ_PC(a) (0x10000ll + ((u64)(a) << 36))
+#define CPTX_PF_INST_LATENCY_PC(a) \
+ (0x10020ll + ((u64)(a) << 36))
+#define CPTX_PF_RD_REQ_PC(a) (0x10040ll + ((u64)(a) << 36))
+#define CPTX_PF_RD_LATENCY_PC(a) (0x10060ll + ((u64)(a) << 36))
+#define CPTX_PF_RD_UC_PC(a) (0x10080ll + ((u64)(a) << 36))
+#define CPTX_PF_ACTIVE_CYCLES_PC(a) (0x10100ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_CTL(a) (0x4000000ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_STATUS(a) (0x4000008ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_CLK(a) (0x4000010ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_DBG_CTL(a) (0x4000018ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_DBG_DATA(a) (0x4000020ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_BIST_STATUS(a) (0x4000028ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_REQ_TIMER(a) (0x4000030ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_MEM_CTL(a) (0x4000038ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_PERF_CTL(a) (0x4001000ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_DBG_CNTX(a, b) \
+ (0x4001100ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_EXE_PERF_EVENT_CNT(a) (0x4001180ll + ((u64)(a) << 36))
+#define CPTX_PF_EXE_EPCI_INBX_CNT(a, b) \
+ (0x4001200ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_EXE_EPCI_OUTBX_CNT(a, b) \
+ (0x4001240ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_ENGX_UCODE_BASE(a, b) \
+ (0x4002000ll + ((u64)(a) << 36) + ((b) << 3))
+#define CPTX_PF_QX_CTL(a, b) \
+ (0x8000000ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_PF_QX_GMCTL(a, b) \
+ (0x8000020ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_PF_QX_CTL2(a, b) \
+ (0x8000100ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_PF_VFX_MBOXX(a, b, c) \
+ (0x8001000ll + ((u64)(a) << 36) + ((b) << 20) + ((c) << 8))
+
+/* VF registers */
+#define CPTX_VQX_CTL(a, b) (0x100ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_SADDR(a, b) (0x200ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_DONE_WAIT(a, b) (0x400ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_INPROG(a, b) (0x410ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_DONE(a, b) (0x420ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_DONE_ACK(a, b) (0x440ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_DONE_INT_W1S(a, b) (0x460ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_DONE_INT_W1C(a, b) (0x468ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_DONE_ENA_W1S(a, b) (0x470ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_DONE_ENA_W1C(a, b) (0x478ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_MISC_INT(a, b) (0x500ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_MISC_INT_W1S(a, b) (0x508ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_MISC_ENA_W1S(a, b) (0x510ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_MISC_ENA_W1C(a, b) (0x518ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VQX_DOORBELL(a, b) (0x600ll + ((u64)(a) << 36) + ((b) << 20))
+#define CPTX_VFX_PF_MBOXX(a, b, c) \
+ (0x1000ll + ((u64)(a) << 36) + ((b) << 20) + ((c) << 3))
+
+enum vftype {
+ AE_TYPES = 1,
+ SE_TYPES = 2,
+ BAD_CPT_TYPES,
+};
+
+/* Max CPT devices supported */
+enum cpt_mbox_opcode {
+ CPT_MSG_VF_UP = 1,
+ CPT_MSG_VF_DOWN,
+ CPT_MSG_READY,
+ CPT_MSG_QLEN,
+ CPT_MSG_QBIND_GRP,
+ CPT_MSG_VQ_PRIORITY,
+};
+
+/* CPT mailbox structure */
+struct cpt_mbox {
+ u64 msg; /* Message type MBOX[0] */
+ u64 data;/* Data MBOX[1] */
+};
+
+/* The Cryptographic Acceleration Unit can *only* be found in SoCs
+ * containing the ThunderX ARM64 CPU implementation. All accesses to the device
+ * registers on this platform are implicitly strongly ordered with respect
+ * to memory accesses. So writeq_relaxed() and readq_relaxed() are safe to use
+ * with no memory barriers in this driver. The readq()/writeq() functions add
+ * explicit ordering operation which in this case are redundant, and only
+ * add overhead.
+ */
+/* Register read/write APIs */
+static inline void cpt_write_csr64(u8 __iomem *hw_addr, u64 offset,
+ u64 val)
+{
+ writeq_relaxed(val, hw_addr + offset);
+}
+
+static inline u64 cpt_read_csr64(u8 __iomem *hw_addr, u64 offset)
+{
+ return readq_relaxed(hw_addr + offset);
+}
+#endif /* __CPT_COMMON_H */
diff --git a/drivers/crypto/cavium/cpt/cpt_hw_types.h b/drivers/crypto/cavium/cpt/cpt_hw_types.h
new file mode 100644
index 0000000..3798803
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cpt_hw_types.h
@@ -0,0 +1,736 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#ifndef __CPT_HW_TYPES_H
+#define __CPT_HW_TYPES_H
+
+#include "cpt_common.h"
+
+/**
+ * Enumeration cpt_comp_e
+ *
+ * CPT Completion Enumeration
+ * Enumerates the values of CPT_RES_S[COMPCODE].
+ */
+enum cpt_comp_e {
+ CPT_COMP_E_NOTDONE = 0x00,
+ CPT_COMP_E_GOOD = 0x01,
+ CPT_COMP_E_FAULT = 0x02,
+ CPT_COMP_E_SWERR = 0x03,
+ CPT_COMP_E_LAST_ENTRY = 0xFF
+};
+
+/**
+ * Structure cpt_inst_s
+ *
+ * CPT Instruction Structure
+ * This structure specifies the instruction layout. Instructions are
+ * stored in memory as little-endian unless CPT()_PF_Q()_CTL[INST_BE] is set.
+ * cpt_inst_s_s
+ * Word 0
+ * doneint:1 Done interrupt.
+ * 0 = No interrupts related to this instruction.
+ * 1 = When the instruction completes, CPT()_VQ()_DONE[DONE] will be
+ * incremented,and based on the rules described there an interrupt may
+ * occur.
+ * Word 1
+ * res_addr:64 [127: 64] Result IOVA.
+ * If nonzero, specifies where to write CPT_RES_S.
+ * If zero, no result structure will be written.
+ * Address must be 16-byte aligned.
+ * Bits <63:49> are ignored by hardware; software should use a
+ * sign-extended bit <48> for forward compatibility.
+ * Word 2
+ * grp:10 [171:162] If [WQ_PTR] is nonzero, the SSO guest-group to use when
+ * CPT submits work SSO.
+ * For the SSO to not discard the add-work request, FPA_PF_MAP() must map
+ * [GRP] and CPT()_PF_Q()_GMCTL[GMID] as valid.
+ * tt:2 [161:160] If [WQ_PTR] is nonzero, the SSO tag type to use when CPT
+ * submits work to SSO
+ * tag:32 [159:128] If [WQ_PTR] is nonzero, the SSO tag to use when CPT
+ * submits work to SSO.
+ * Word 3
+ * wq_ptr:64 [255:192] If [WQ_PTR] is nonzero, it is a pointer to a
+ * work-queue entry that CPT submits work to SSO after all context,
+ * output data, and result write operations are visible to other
+ * CNXXXX units and the cores. Bits <2:0> must be zero.
+ * Bits <63:49> are ignored by hardware; software should
+ * use a sign-extended bit <48> for forward compatibility.
+ * Internal:
+ * Bits <63:49>, <2:0> are ignored by hardware, treated as always 0x0.
+ * Word 4
+ * ei0:64; [319:256] Engine instruction word 0. Passed to the AE/SE.
+ * Word 5
+ * ei1:64; [383:320] Engine instruction word 1. Passed to the AE/SE.
+ * Word 6
+ * ei2:64; [447:384] Engine instruction word 1. Passed to the AE/SE.
+ * Word 7
+ * ei3:64; [511:448] Engine instruction word 1. Passed to the AE/SE.
+ *
+ */
+union cpt_inst_s {
+ u64 u[8];
+ struct cpt_inst_s_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_17_63:47;
+ u64 doneint:1;
+ u64 reserved_0_1:16;
+#else /* Word 0 - Little Endian */
+ u64 reserved_0_15:16;
+ u64 doneint:1;
+ u64 reserved_17_63:47;
+#endif /* Word 0 - End */
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 1 - Big Endian */
+ u64 res_addr:64;
+#else /* Word 1 - Little Endian */
+ u64 res_addr:64;
+#endif /* Word 1 - End */
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 2 - Big Endian */
+ u64 reserved_172_19:20;
+ u64 grp:10;
+ u64 tt:2;
+ u64 tag:32;
+#else /* Word 2 - Little Endian */
+ u64 tag:32;
+ u64 tt:2;
+ u64 grp:10;
+ u64 reserved_172_191:20;
+#endif /* Word 2 - End */
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 3 - Big Endian */
+ u64 wq_ptr:64;
+#else /* Word 3 - Little Endian */
+ u64 wq_ptr:64;
+#endif /* Word 3 - End */
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 4 - Big Endian */
+ u64 ei0:64;
+#else /* Word 4 - Little Endian */
+ u64 ei0:64;
+#endif /* Word 4 - End */
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 5 - Big Endian */
+ u64 ei1:64;
+#else /* Word 5 - Little Endian */
+ u64 ei1:64;
+#endif /* Word 5 - End */
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 6 - Big Endian */
+ u64 ei2:64;
+#else /* Word 6 - Little Endian */
+ u64 ei2:64;
+#endif /* Word 6 - End */
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 7 - Big Endian */
+ u64 ei3:64;
+#else /* Word 7 - Little Endian */
+ u64 ei3:64;
+#endif /* Word 7 - End */
+ } s;
+};
+
+/**
+ * Structure cpt_res_s
+ *
+ * CPT Result Structure
+ * The CPT coprocessor writes the result structure after it completes a
+ * CPT_INST_S instruction. The result structure is exactly 16 bytes, and
+ * each instruction completion produces exactly one result structure.
+ *
+ * This structure is stored in memory as little-endian unless
+ * CPT()_PF_Q()_CTL[INST_BE] is set.
+ * cpt_res_s_s
+ * Word 0
+ * doneint:1 [16:16] Done interrupt. This bit is copied from the
+ * corresponding instruction's CPT_INST_S[DONEINT].
+ * compcode:8 [7:0] Indicates completion/error status of the CPT coprocessor
+ * for the associated instruction, as enumerated by CPT_COMP_E.
+ * Core software may write the memory location containing [COMPCODE] to
+ * 0x0 before ringing the doorbell, and then poll for completion by
+ * checking for a nonzero value.
+ * Once the core observes a nonzero [COMPCODE] value in this case,the CPT
+ * coprocessor will have also completed L2/DRAM write operations.
+ * Word 1
+ * reserved
+ *
+ */
+union cpt_res_s {
+ u64 u[2];
+ struct cpt_res_s_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_17_63:47;
+ u64 doneint:1;
+ u64 reserved_8_15:8;
+ u64 compcode:8;
+#else /* Word 0 - Little Endian */
+ u64 compcode:8;
+ u64 reserved_8_15:8;
+ u64 doneint:1;
+ u64 reserved_17_63:47;
+#endif /* Word 0 - End */
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 1 - Big Endian */
+ u64 reserved_64_127:64;
+#else /* Word 1 - Little Endian */
+ u64 reserved_64_127:64;
+#endif /* Word 1 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_pf_bist_status
+ *
+ * CPT PF Control Bist Status Register
+ * This register has the BIST status of memories. Each bit is the BIST result
+ * of an individual memory (per bit, 0 = pass and 1 = fail).
+ * cptx_pf_bist_status_s
+ * Word0
+ * bstatus [29:0](RO/H) BIST status. One bit per memory, enumerated by
+ * CPT_RAMS_E.
+ */
+union cptx_pf_bist_status {
+ u64 u;
+ struct cptx_pf_bist_status_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_30_63:34;
+ u64 bstatus:30;
+#else /* Word 0 - Little Endian */
+ u64 bstatus:30;
+ u64 reserved_30_63:34;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_pf_constants
+ *
+ * CPT PF Constants Register
+ * This register contains implementation-related parameters of CPT in CNXXXX.
+ * cptx_pf_constants_s
+ * Word 0
+ * reserved_40_63:24 [63:40] Reserved.
+ * epcis:8 [39:32](RO) Number of EPCI busses.
+ * grps:8 [31:24](RO) Number of engine groups implemented.
+ * ae:8 [23:16](RO/H) Number of AEs. In CNXXXX, for CPT0 returns 0x0,
+ * for CPT1 returns 0x18, or less if there are fuse-disables.
+ * se:8 [15:8](RO/H) Number of SEs. In CNXXXX, for CPT0 returns 0x30,
+ * or less if there are fuse-disables, for CPT1 returns 0x0.
+ * vq:8 [7:0](RO) Number of VQs.
+ */
+union cptx_pf_constants {
+ u64 u;
+ struct cptx_pf_constants_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_40_63:24;
+ u64 epcis:8;
+ u64 grps:8;
+ u64 ae:8;
+ u64 se:8;
+ u64 vq:8;
+#else /* Word 0 - Little Endian */
+ u64 vq:8;
+ u64 se:8;
+ u64 ae:8;
+ u64 grps:8;
+ u64 epcis:8;
+ u64 reserved_40_63:24;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_pf_exe_bist_status
+ *
+ * CPT PF Engine Bist Status Register
+ * This register has the BIST status of each engine. Each bit is the
+ * BIST result of an individual engine (per bit, 0 = pass and 1 = fail).
+ * cptx_pf_exe_bist_status_s
+ * Word0
+ * reserved_48_63:16 [63:48] reserved
+ * bstatus:48 [47:0](RO/H) BIST status. One bit per engine.
+ *
+ */
+union cptx_pf_exe_bist_status {
+ u64 u;
+ struct cptx_pf_exe_bist_status_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_48_63:16;
+ u64 bstatus:48;
+#else /* Word 0 - Little Endian */
+ u64 bstatus:48;
+ u64 reserved_48_63:16;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_pf_exe_ctl
+ *
+ * CPT PF Engine Control Register
+ * This register enables the engines.
+ * cptx_pf_exe_ctl_s
+ * Word0
+ * enable:64 [63:0](R/W) Individual enables for each of the engines.
+ */
+union cptx_pf_exe_ctl {
+ u64 u;
+ struct cptx_pf_exe_ctl_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 enable:64;
+#else /* Word 0 - Little Endian */
+ u64 enable:64;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_pf_q#_ctl
+ *
+ * CPT Queue Control Register
+ * This register configures queues. This register should be changed only
+ * when quiescent (see CPT()_VQ()_INPROG[INFLIGHT]).
+ * cptx_pf_qx_ctl_s
+ * Word0
+ * reserved_60_63:4 [63:60] reserved.
+ * aura:12; [59:48](R/W) Guest-aura for returning this queue's
+ * instruction-chunk buffers to FPA. Only used when [INST_FREE] is set.
+ * For the FPA to not discard the request, FPA_PF_MAP() must map
+ * [AURA] and CPT()_PF_Q()_GMCTL[GMID] as valid.
+ * reserved_45_47:3 [47:45] reserved.
+ * size:13 [44:32](R/W) Command-buffer size, in number of 64-bit words per
+ * command buffer segment. Must be 8*n + 1, where n is the number of
+ * instructions per buffer segment.
+ * reserved_11_31:21 [31:11] Reserved.
+ * cont_err:1 [10:10](R/W) Continue on error.
+ * 0 = When CPT()_VQ()_MISC_INT[NWRP], CPT()_VQ()_MISC_INT[IRDE] or
+ * CPT()_VQ()_MISC_INT[DOVF] are set by hardware or software via
+ * CPT()_VQ()_MISC_INT_W1S, then CPT()_VQ()_CTL[ENA] is cleared. Due to
+ * pipelining, additional instructions may have been processed between the
+ * instruction causing the error and the next instruction in the disabled
+ * queue (the instruction at CPT()_VQ()_SADDR).
+ * 1 = Ignore errors and continue processing instructions.
+ * For diagnostic use only.
+ * inst_free:1 [9:9](R/W) Instruction FPA free. When set, when CPT reaches the
+ * end of an instruction chunk, that chunk will be freed to the FPA.
+ * inst_be:1 [8:8](R/W) Instruction big-endian control. When set, instructions,
+ * instruction next chunk pointers, and result structures are stored in
+ * big-endian format in memory.
+ * iqb_ldwb:1 [7:7](R/W) Instruction load don't write back.
+ * 0 = The hardware issues NCB transient load (LDT) towards the cache,
+ * which if the line hits and is is dirty will cause the line to be
+ * written back before being replaced.
+ * 1 = The hardware issues NCB LDWB read-and-invalidate command towards
+ * the cache when fetching the last word of instructions; as a result the
+ * line will not be written back when replaced. This improves
+ * performance, but software must not read the instructions after they are
+ * posted to the hardware. Reads that do not consume the last word of a
+ * cache line always use LDI.
+ * reserved_4_6:3 [6:4] Reserved.
+ * grp:3; [3:1](R/W) Engine group.
+ * pri:1; [0:0](R/W) Queue priority.
+ * 1 = This queue has higher priority. Round-robin between higher
+ * priority queues.
+ * 0 = This queue has lower priority. Round-robin between lower
+ * priority queues.
+ */
+union cptx_pf_qx_ctl {
+ u64 u;
+ struct cptx_pf_qx_ctl_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_60_63:4;
+ u64 aura:12;
+ u64 reserved_45_47:3;
+ u64 size:13;
+ u64 reserved_11_31:21;
+ u64 cont_err:1;
+ u64 inst_free:1;
+ u64 inst_be:1;
+ u64 iqb_ldwb:1;
+ u64 reserved_4_6:3;
+ u64 grp:3;
+ u64 pri:1;
+#else /* Word 0 - Little Endian */
+ u64 pri:1;
+ u64 grp:3;
+ u64 reserved_4_6:3;
+ u64 iqb_ldwb:1;
+ u64 inst_be:1;
+ u64 inst_free:1;
+ u64 cont_err:1;
+ u64 reserved_11_31:21;
+ u64 size:13;
+ u64 reserved_45_47:3;
+ u64 aura:12;
+ u64 reserved_60_63:4;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_pf_g#_en
+ *
+ * CPT PF Group Control Register
+ * This register configures engine groups.
+ * cptx_pf_gx_en_s
+ * Word0
+ * en: 64; [63:0](R/W/H) Engine group enable. One bit corresponds to each
+ * engine, with the bit set to indicate this engine can service this group.
+ * Bits corresponding to unimplemented engines read as zero, i.e. only bit
+ * numbers less than CPT()_PF_CONSTANTS[AE] + CPT()_PF_CONSTANTS[SE] are
+ * writable. AE engine bits follow SE engine bits.
+ * E.g. if CPT()_PF_CONSTANTS[AE] = 0x1, and CPT()_PF_CONSTANTS[SE] = 0x2,
+ * then bits <2:0> are read/writable with bit <2> corresponding to AE<0>,
+ * and bit <1> to SE<1>, and bit<0> to SE<0>. Before disabling an engine,
+ * the corresponding bit in each group must be cleared. CPT()_PF_EXEC_BUSY
+ * can then be polled to determing when the engine becomes idle.
+ * At the point, the engine can be disabled.
+ */
+union cptx_pf_gx_en {
+ u64 u;
+ struct cptx_pf_gx_en_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 en:64;
+#else /* Word 0 - Little Endian */
+ u64 en:64;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_saddr
+ *
+ * CPT Queue Starting Buffer Address Registers
+ * These registers set the instruction buffer starting address.
+ * cptx_vqx_saddr_s
+ * Word0
+ * reserved_49_63:15 [63:49] Reserved.
+ * ptr:43 [48:6](R/W/H) Instruction buffer IOVA <48:6> (64-byte aligned).
+ * When written, it is the initial buffer starting address; when read,
+ * it is the next read pointer to be requested from L2C. The PTR field
+ * is overwritten with the next pointer each time that the command buffer
+ * segment is exhausted. New commands will then be read from the newly
+ * specified command buffer pointer.
+ * reserved_0_5:6 [5:0] Reserved.
+ *
+ */
+union cptx_vqx_saddr {
+ u64 u;
+ struct cptx_vqx_saddr_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_49_63:15;
+ u64 ptr:43;
+ u64 reserved_0_5:6;
+#else /* Word 0 - Little Endian */
+ u64 reserved_0_5:6;
+ u64 ptr:43;
+ u64 reserved_49_63:15;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_misc_ena_w1s
+ *
+ * CPT Queue Misc Interrupt Enable Set Register
+ * This register sets interrupt enable bits.
+ * cptx_vqx_misc_ena_w1s_s
+ * Word0
+ * reserved_5_63:59 [63:5] Reserved.
+ * swerr:1 [4:4](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[SWERR].
+ * nwrp:1 [3:3](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[NWRP].
+ * irde:1 [2:2](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[IRDE].
+ * dovf:1 [1:1](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[DOVF].
+ * mbox:1 [0:0](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[MBOX].
+ *
+ */
+union cptx_vqx_misc_ena_w1s {
+ u64 u;
+ struct cptx_vqx_misc_ena_w1s_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_5_63:59;
+ u64 swerr:1;
+ u64 nwrp:1;
+ u64 irde:1;
+ u64 dovf:1;
+ u64 mbox:1;
+#else /* Word 0 - Little Endian */
+ u64 mbox:1;
+ u64 dovf:1;
+ u64 irde:1;
+ u64 nwrp:1;
+ u64 swerr:1;
+ u64 reserved_5_63:59;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_doorbell
+ *
+ * CPT Queue Doorbell Registers
+ * Doorbells for the CPT instruction queues.
+ * cptx_vqx_doorbell_s
+ * Word0
+ * reserved_20_63:44 [63:20] Reserved.
+ * dbell_cnt:20 [19:0](R/W/H) Number of instruction queue 64-bit words to add
+ * to the CPT instruction doorbell count. Readback value is the the
+ * current number of pending doorbell requests. If counter overflows
+ * CPT()_VQ()_MISC_INT[DBELL_DOVF] is set. To reset the count back to
+ * zero, write one to clear CPT()_VQ()_MISC_INT_ENA_W1C[DBELL_DOVF],
+ * then write a value of 2^20 minus the read [DBELL_CNT], then write one
+ * to CPT()_VQ()_MISC_INT_W1C[DBELL_DOVF] and
+ * CPT()_VQ()_MISC_INT_ENA_W1S[DBELL_DOVF]. Must be a multiple of 8.
+ * All CPT instructions are 8 words and require a doorbell count of
+ * multiple of 8.
+ */
+union cptx_vqx_doorbell {
+ u64 u;
+ struct cptx_vqx_doorbell_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_20_63:44;
+ u64 dbell_cnt:20;
+#else /* Word 0 - Little Endian */
+ u64 dbell_cnt:20;
+ u64 reserved_20_63:44;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_inprog
+ *
+ * CPT Queue In Progress Count Registers
+ * These registers contain the per-queue instruction in flight registers.
+ * cptx_vqx_inprog_s
+ * Word0
+ * reserved_8_63:56 [63:8] Reserved.
+ * inflight:8 [7:0](RO/H) Inflight count. Counts the number of instructions
+ * for the VF for which CPT is fetching, executing or responding to
+ * instructions. However this does not include any interrupts that are
+ * awaiting software handling (CPT()_VQ()_DONE[DONE] != 0x0).
+ * A queue may not be reconfigured until:
+ * 1. CPT()_VQ()_CTL[ENA] is cleared by software.
+ * 2. [INFLIGHT] is polled until equals to zero.
+ */
+union cptx_vqx_inprog {
+ u64 u;
+ struct cptx_vqx_inprog_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_8_63:56;
+ u64 inflight:8;
+#else /* Word 0 - Little Endian */
+ u64 inflight:8;
+ u64 reserved_8_63:56;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_misc_int
+ *
+ * CPT Queue Misc Interrupt Register
+ * These registers contain the per-queue miscellaneous interrupts.
+ * cptx_vqx_misc_int_s
+ * Word 0
+ * reserved_5_63:59 [63:5] Reserved.
+ * swerr:1 [4:4](R/W1C/H) Software error from engines.
+ * nwrp:1 [3:3](R/W1C/H) NCB result write response error.
+ * irde:1 [2:2](R/W1C/H) Instruction NCB read response error.
+ * dovf:1 [1:1](R/W1C/H) Doorbell overflow.
+ * mbox:1 [0:0](R/W1C/H) PF to VF mailbox interrupt. Set when
+ * CPT()_VF()_PF_MBOX(0) is written.
+ *
+ */
+union cptx_vqx_misc_int {
+ u64 u;
+ struct cptx_vqx_misc_int_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_5_63:59;
+ u64 swerr:1;
+ u64 nwrp:1;
+ u64 irde:1;
+ u64 dovf:1;
+ u64 mbox:1;
+#else /* Word 0 - Little Endian */
+ u64 mbox:1;
+ u64 dovf:1;
+ u64 irde:1;
+ u64 nwrp:1;
+ u64 swerr:1;
+ u64 reserved_5_63:59;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_done_ack
+ *
+ * CPT Queue Done Count Ack Registers
+ * This register is written by software to acknowledge interrupts.
+ * cptx_vqx_done_ack_s
+ * Word0
+ * reserved_20_63:44 [63:20] Reserved.
+ * done_ack:20 [19:0](R/W/H) Number of decrements to CPT()_VQ()_DONE[DONE].
+ * Reads CPT()_VQ()_DONE[DONE]. Written by software to acknowledge
+ * interrupts. If CPT()_VQ()_DONE[DONE] is still nonzero the interrupt
+ * will be re-sent if the conditions described in CPT()_VQ()_DONE[DONE]
+ * are satisfied.
+ *
+ */
+union cptx_vqx_done_ack {
+ u64 u;
+ struct cptx_vqx_done_ack_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_20_63:44;
+ u64 done_ack:20;
+#else /* Word 0 - Little Endian */
+ u64 done_ack:20;
+ u64 reserved_20_63:44;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_done
+ *
+ * CPT Queue Done Count Registers
+ * These registers contain the per-queue instruction done count.
+ * cptx_vqx_done_s
+ * Word0
+ * reserved_20_63:44 [63:20] Reserved.
+ * done:20 [19:0](R/W/H) Done count. When CPT_INST_S[DONEINT] set and that
+ * instruction completes, CPT()_VQ()_DONE[DONE] is incremented when the
+ * instruction finishes. Write to this field are for diagnostic use only;
+ * instead software writes CPT()_VQ()_DONE_ACK with the number of
+ * decrements for this field.
+ * Interrupts are sent as follows:
+ * * When CPT()_VQ()_DONE[DONE] = 0, then no results are pending, the
+ * interrupt coalescing timer is held to zero, and an interrupt is not
+ * sent.
+ * * When CPT()_VQ()_DONE[DONE] != 0, then the interrupt coalescing timer
+ * counts. If the counter is >= CPT()_VQ()_DONE_WAIT[TIME_WAIT]*1024, or
+ * CPT()_VQ()_DONE[DONE] >= CPT()_VQ()_DONE_WAIT[NUM_WAIT], i.e. enough
+ * time has passed or enough results have arrived, then the interrupt is
+ * sent.
+ * * When CPT()_VQ()_DONE_ACK is written (or CPT()_VQ()_DONE is written
+ * but this is not typical), the interrupt coalescing timer restarts.
+ * Note after decrementing this interrupt equation is recomputed,
+ * for example if CPT()_VQ()_DONE[DONE] >= CPT()_VQ()_DONE_WAIT[NUM_WAIT]
+ * and because the timer is zero, the interrupt will be resent immediately.
+ * (This covers the race case between software acknowledging an interrupt
+ * and a result returning.)
+ * * When CPT()_VQ()_DONE_ENA_W1S[DONE] = 0, interrupts are not sent,
+ * but the counting described above still occurs.
+ * Since CPT instructions complete out-of-order, if software is using
+ * completion interrupts the suggested scheme is to request a DONEINT on
+ * each request, and when an interrupt arrives perform a "greedy" scan for
+ * completions; even if a later command is acknowledged first this will
+ * not result in missing a completion.
+ * Software is responsible for making sure [DONE] does not overflow;
+ * for example by insuring there are not more than 2^20-1 instructions in
+ * flight that may request interrupts.
+ *
+ */
+union cptx_vqx_done {
+ u64 u;
+ struct cptx_vqx_done_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_20_63:44;
+ u64 done:20;
+#else /* Word 0 - Little Endian */
+ u64 done:20;
+ u64 reserved_20_63:44;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_done_wait
+ *
+ * CPT Queue Done Interrupt Coalescing Wait Registers
+ * Specifies the per queue interrupt coalescing settings.
+ * cptx_vqx_done_wait_s
+ * Word0
+ * reserved_48_63:16 [63:48] Reserved.
+ * time_wait:16; [47:32](R/W) Time hold-off. When CPT()_VQ()_DONE[DONE] = 0
+ * or CPT()_VQ()_DONE_ACK is written a timer is cleared. When the timer
+ * reaches [TIME_WAIT]*1024 then interrupt coalescing ends.
+ * see CPT()_VQ()_DONE[DONE]. If 0x0, time coalescing is disabled.
+ * reserved_20_31:12 [31:20] Reserved.
+ * num_wait:20 [19:0](R/W) Number of messages hold-off.
+ * When CPT()_VQ()_DONE[DONE] >= [NUM_WAIT] then interrupt coalescing ends
+ * see CPT()_VQ()_DONE[DONE]. If 0x0, same behavior as 0x1.
+ *
+ */
+union cptx_vqx_done_wait {
+ u64 u;
+ struct cptx_vqx_done_wait_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_48_63:16;
+ u64 time_wait:16;
+ u64 reserved_20_31:12;
+ u64 num_wait:20;
+#else /* Word 0 - Little Endian */
+ u64 num_wait:20;
+ u64 reserved_20_31:12;
+ u64 time_wait:16;
+ u64 reserved_48_63:16;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_done_ena_w1s
+ *
+ * CPT Queue Done Interrupt Enable Set Registers
+ * Write 1 to these registers will enable the DONEINT interrupt for the queue.
+ * cptx_vqx_done_ena_w1s_s
+ * Word0
+ * reserved_1_63:63 [63:1] Reserved.
+ * done:1 [0:0](R/W1S/H) Write 1 will enable DONEINT for this queue.
+ * Write 0 has no effect. Read will return the enable bit.
+ */
+union cptx_vqx_done_ena_w1s {
+ u64 u;
+ struct cptx_vqx_done_ena_w1s_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_1_63:63;
+ u64 done:1;
+#else /* Word 0 - Little Endian */
+ u64 done:1;
+ u64 reserved_1_63:63;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/**
+ * Register (NCB) cpt#_vq#_ctl
+ *
+ * CPT VF Queue Control Registers
+ * This register configures queues. This register should be changed (other than
+ * clearing [ENA]) only when quiescent (see CPT()_VQ()_INPROG[INFLIGHT]).
+ * cptx_vqx_ctl_s
+ * Word0
+ * reserved_1_63:63 [63:1] Reserved.
+ * ena:1 [0:0](R/W/H) Enables the logical instruction queue.
+ * See also CPT()_PF_Q()_CTL[CONT_ERR] and CPT()_VQ()_INPROG[INFLIGHT].
+ * 1 = Queue is enabled.
+ * 0 = Queue is disabled.
+ */
+union cptx_vqx_ctl {
+ u64 u;
+ struct cptx_vqx_ctl_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_1_63:63;
+ u64 ena:1;
+#else /* Word 0 - Little Endian */
+ u64 ena:1;
+ u64 reserved_1_63:63;
+#endif /* Word 0 - End */
+ } s;
+};
+#endif /*__CPT_HW_TYPES_H*/
diff --git a/drivers/crypto/cavium/cpt/cptpf.h b/drivers/crypto/cavium/cpt/cptpf.h
new file mode 100644
index 0000000..4511a21
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptpf.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#ifndef __CPTPF_H
+#define __CPTPF_H
+
+#include "cpt_common.h"
+
+#define CSR_DELAY 30
+#define CPT_MAX_CORE_GROUPS 8
+#define CPT_MAX_SE_CORES 10
+#define CPT_MAX_AE_CORES 6
+#define CPT_MAX_TOTAL_CORES (CPT_MAX_SE_CORES + CPT_MAX_AE_CORES)
+#define CPT_MAX_VF_NUM 16
+#define CPT_PF_MSIX_VECTORS 3
+#define CPT_PF_INT_VEC_E_MBOXX(a) (0x02 + (a))
+
+struct cpt_device;
+
+struct microcode {
+ u8 is_mc_valid;
+ u8 is_ae;
+ u8 group;
+ u8 num_cores;
+ u32 code_size;
+ u64 core_mask;
+ u8 version[32];
+ /* Base info */
+ dma_addr_t phys_base;
+ void *code;
+};
+
+struct cpt_vf_info {
+ u8 state;
+ u8 priority;
+ u8 id;
+ u32 qlen;
+};
+
+/**
+ * cpt device structure
+ */
+struct cpt_device {
+ u16 flags; /**< Flags to hold device status bits */
+ u8 num_vf_en; /**< Number of VFs enabled (0...CPT_MAX_VF_NUM) */
+ struct cpt_vf_info vfinfo[CPT_MAX_VF_NUM]; /* Per VF info */
+
+ void __iomem *reg_base; /* Register start address */
+ /* MSI-X */
+ u8 num_vec;
+ bool msix_enabled;
+ struct msix_entry msix_entries[CPT_PF_MSIX_VECTORS];
+ bool irq_allocated[CPT_PF_MSIX_VECTORS];
+ struct pci_dev *pdev; /**< pci device handle */
+
+ struct microcode mcode[CPT_MAX_CORE_GROUPS];
+ u8 next_mc_idx; /**< next microcode index */
+ u8 next_group;
+ u8 max_se_cores;
+ u8 max_ae_cores;
+};
+
+void cpt_mbox_intr_handler(struct cpt_device *cpt, s32 mbx);
+#endif /* __CPTPF_H */
diff --git a/drivers/crypto/cavium/cpt/cptpf_main.c b/drivers/crypto/cavium/cpt/cptpf_main.c
new file mode 100644
index 0000000..ff6674b
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptpf_main.c
@@ -0,0 +1,733 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/printk.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/firmware.h>
+#include <linux/pci.h>
+
+#include "cptpf.h"
+
+#define DRV_NAME "thunder-cpt"
+#define DRV_VERSION "1.0"
+
+static u32 num_vfs = 4; /* Default 4 VF enabled */
+module_param(num_vfs, uint, 0444);
+MODULE_PARM_DESC(num_vfs, "Number of VFs to enable(1-16)");
+
+static u64 get_mask_from_value(s32 value)
+{
+ u64 mask = 0ULL;
+ s32 i;
+
+ for (i = 0; i < value; i++)
+ mask |= ((u64)1 << i);
+
+ return mask;
+}
+
+/*
+ * Disable cores specified by coremask
+ */
+static void cpt_disable_cores(struct cpt_device *cpt, u64 coremask,
+ u8 type, u8 grp)
+{
+ union cptx_pf_exe_ctl pf_exe_ctl;
+ u32 timeout = 0xFFFFFFFF;
+ u64 grpmask = 0;
+ struct device *dev = &cpt->pdev->dev;
+
+ if (type == AE_TYPES)
+ coremask = (coremask << cpt->max_se_cores);
+
+ /* Disengage the cores from groups */
+ grpmask = cpt_read_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp));
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp),
+ (grpmask & ~coremask));
+ udelay(CSR_DELAY);
+ grp = cpt_read_csr64(cpt->reg_base, CPTX_PF_EXEC_BUSY(0));
+ while (grp & coremask) {
+ dev_err(dev, "Cores still busy %llx", coremask);
+ grp = cpt_read_csr64(cpt->reg_base,
+ CPTX_PF_EXEC_BUSY(0));
+ if (timeout--)
+ break;
+ }
+
+ /* Disable the cores */
+ pf_exe_ctl.u = cpt_read_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0));
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0),
+ (pf_exe_ctl.u & ~coremask));
+ udelay(CSR_DELAY);
+}
+
+/*
+ * Enable cores specified by coremask
+ */
+static void cpt_enable_cores(struct cpt_device *cpt, u64 coremask,
+ u8 type)
+{
+ union cptx_pf_exe_ctl pf_exe_ctl;
+
+ if (type == AE_TYPES)
+ coremask = (coremask << cpt->max_se_cores);
+
+ pf_exe_ctl.u = cpt_read_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0));
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0),
+ (pf_exe_ctl.u | coremask));
+ udelay(CSR_DELAY);
+}
+
+static void cpt_configure_group(struct cpt_device *cpt, u8 grp,
+ u64 coremask, u8 type)
+{
+ union cptx_pf_gx_en pf_gx_en = {0};
+
+ if (type == AE_TYPES)
+ coremask = (coremask << cpt->max_se_cores);
+
+ pf_gx_en.u = cpt_read_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp));
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp),
+ (pf_gx_en.u | coremask));
+ udelay(CSR_DELAY);
+}
+
+static void cpt_disable_mbox_interrupts(struct cpt_device *cpt)
+{
+ /* Clear mbox(0) interupts for all vfs */
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_MBOX_ENA_W1CX(0, 0), ~0ull);
+}
+
+static void cpt_disable_ecc_interrupts(struct cpt_device *cpt)
+{
+ /* Clear ecc(0) interupts for all vfs */
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_ECC0_ENA_W1C(0), ~0ull);
+}
+
+static void cpt_disable_exec_interrupts(struct cpt_device *cpt)
+{
+ /* Clear exec interupts for all vfs */
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_EXEC_ENA_W1C(0), ~0ull);
+}
+
+static void cpt_disable_all_interrupts(struct cpt_device *cpt)
+{
+ cpt_disable_mbox_interrupts(cpt);
+ cpt_disable_ecc_interrupts(cpt);
+ cpt_disable_exec_interrupts(cpt);
+}
+
+static void cpt_enable_mbox_interrupts(struct cpt_device *cpt)
+{
+ /* Set mbox(0) interupts for all vfs */
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_MBOX_ENA_W1SX(0, 0), ~0ull);
+}
+
+static s32 cpt_load_microcode(struct cpt_device *cpt, struct microcode *mcode)
+{
+ s32 ret = 0, core = 0, shift = 0;
+ u32 total_cores = 0;
+ struct device *dev = &cpt->pdev->dev;
+
+ if (!mcode || !mcode->code) {
+ dev_err(dev, "Either the mcode is null or data is NULL\n");
+ return 1;
+ }
+
+ if (mcode->code_size == 0) {
+ dev_err(dev, "microcode size is 0\n");
+ return 1;
+ }
+
+ /* Assumes 0-9 are SE cores for UCODE_BASE registers and
+ * AE core bases follow
+ */
+ if (mcode->is_ae) {
+ core = CPT_MAX_SE_CORES; /* start couting from 10 */
+ total_cores = CPT_MAX_TOTAL_CORES; /* upto 15 */
+ } else {
+ core = 0; /* start couting from 0 */
+ total_cores = CPT_MAX_SE_CORES; /* upto 9 */
+ }
+
+ /* Point to microcode for each core of the group */
+ for (; core < total_cores ; core++, shift++) {
+ if (mcode->core_mask & (1 << shift)) {
+ cpt_write_csr64(cpt->reg_base,
+ CPTX_PF_ENGX_UCODE_BASE(0, core),
+ (u64)mcode->phys_base);
+ }
+ }
+ return ret;
+}
+
+static s32 do_cpt_init(struct cpt_device *cpt, struct microcode *mcode)
+{
+ s32 ret = 0;
+ struct device *dev = &cpt->pdev->dev;
+
+ /* Make device not ready */
+ cpt->flags &= ~CPT_FLAG_DEVICE_READY;
+ /* Disable All PF interrupts */
+ cpt_disable_all_interrupts(cpt);
+ /* Calculate mcode group and coremasks */
+ if (mcode->is_ae) {
+ if (mcode->num_cores > cpt->max_ae_cores) {
+ dev_err(dev, "Requested for more cores than available AE cores\n");
+ ret = -1;
+ goto cpt_init_fail;
+ }
+
+ if (cpt->next_group >= CPT_MAX_CORE_GROUPS) {
+ dev_err(dev, "Can't load, all eight microcode groups in use");
+ return -ENFILE;
+ }
+
+ mcode->group = cpt->next_group;
+ /* Convert requested cores to mask */
+ mcode->core_mask = get_mask_from_value(mcode->num_cores);
+ cpt_disable_cores(cpt, mcode->core_mask, AE_TYPES,
+ mcode->group);
+ /* Load microcode for AE engines */
+ if (cpt_load_microcode(cpt, mcode)) {
+ dev_err(dev, "Microcode load Failed for %s\n",
+ mcode->version);
+ ret = -1;
+ goto cpt_init_fail;
+ }
+ cpt->next_group++;
+ /* Configure group mask for the mcode */
+ cpt_configure_group(cpt, mcode->group, mcode->core_mask,
+ AE_TYPES);
+ /* Enable AE cores for the group mask */
+ cpt_enable_cores(cpt, mcode->core_mask, AE_TYPES);
+ } else {
+ if (mcode->num_cores > cpt->max_se_cores) {
+ dev_err(dev, "Requested for more cores than available SE cores\n");
+ ret = -1;
+ goto cpt_init_fail;
+ }
+ if (cpt->next_group >= CPT_MAX_CORE_GROUPS) {
+ dev_err(dev, "Can't load, all eight microcode groups in use");
+ return -ENFILE;
+ }
+
+ mcode->group = cpt->next_group;
+ /* Covert requested cores to mask */
+ mcode->core_mask = get_mask_from_value(mcode->num_cores);
+ cpt_disable_cores(cpt, mcode->core_mask, SE_TYPES,
+ mcode->group);
+ /* Load microcode for SE engines */
+ if (cpt_load_microcode(cpt, mcode)) {
+ dev_err(dev, "Microcode load Failed for %s\n",
+ mcode->version);
+ ret = -1;
+ goto cpt_init_fail;
+ }
+ cpt->next_group++;
+ /* Configure group mask for the mcode */
+ cpt_configure_group(cpt, mcode->group, mcode->core_mask,
+ SE_TYPES);
+ /* Enable SE cores for the group mask */
+ cpt_enable_cores(cpt, mcode->core_mask, SE_TYPES);
+ }
+
+ /* Enabled PF mailbox interrupts */
+ cpt_enable_mbox_interrupts(cpt);
+ cpt->flags |= CPT_FLAG_DEVICE_READY;
+
+ return ret;
+
+cpt_init_fail:
+ /* Enabled PF mailbox interrupts */
+ cpt_enable_mbox_interrupts(cpt);
+
+ return ret;
+}
+
+struct ucode_header {
+ u8 version[32];
+ u32 code_length;
+ u32 data_length;
+ u64 sram_address;
+};
+
+static s32 cpt_ucode_load_fw(struct cpt_device *cpt, const u8 *fw, bool is_ae)
+{
+ const struct firmware *fw_entry;
+ struct device *dev = &cpt->pdev->dev;
+ struct ucode_header *ucode;
+ struct microcode *mcode;
+ int j, ret = 0;
+
+ ret = request_firmware(&fw_entry, fw, dev);
+ if (ret)
+ return ret;
+
+ mcode = &cpt->mcode[cpt->next_mc_idx];
+ ucode = (struct ucode_header *)fw_entry->data;
+ memcpy(mcode->version, (u8 *)fw_entry->data, 32);
+ mcode->code_size = ntohl(ucode->code_length) * 2;
+ mcode->is_ae = is_ae;
+ mcode->core_mask = 0ULL;
+ mcode->num_cores = is_ae ? 6 : 10;
+
+ /* Allocate DMAable space */
+ mcode->code = dma_zalloc_coherent(&cpt->pdev->dev, mcode->code_size,
+ &mcode->phys_base, GFP_KERNEL);
+ if (!mcode->code) {
+ dev_err(dev, "Unable to allocate space for microcode");
+ return -ENOMEM;
+ }
+
+ memcpy((void *)mcode->code, (void *)(fw_entry->data + sizeof(*ucode)),
+ mcode->code_size);
+
+ /* Byte swap 64-bit */
+ for (j = 0; j < (mcode->code_size / 8); j++)
+ ((u64 *)mcode->code)[j] = cpu_to_be64(((u64 *)mcode->code)[j]);
+ /* MC needs 16-bit swap */
+ for (j = 0; j < (mcode->code_size / 2); j++)
+ ((u16 *)mcode->code)[j] = cpu_to_be16(((u16 *)mcode->code)[j]);
+
+ dev_dbg(dev, "mcode->code_size = %u\n", mcode->code_size);
+ dev_dbg(dev, "mcode->is_ae = %u\n", mcode->is_ae);
+ dev_dbg(dev, "mcode->num_cores = %u\n", mcode->num_cores);
+ dev_dbg(dev, "mcode->code = %llx\n", (u64)mcode->code);
+ dev_dbg(dev, "mcode->phys_base = %llx\n", mcode->phys_base);
+
+ ret = do_cpt_init(cpt, mcode);
+ if (ret) {
+ dev_err(dev, "do_cpt_init failed with ret: %d\n", ret);
+ return ret;
+ }
+
+ dev_info(dev, "Microcode Loaded %s\n", mcode->version);
+ mcode->is_mc_valid = 1;
+ cpt->next_mc_idx++;
+ release_firmware(fw_entry);
+
+ return ret;
+}
+
+static s32 cpt_ucode_load(struct cpt_device *cpt)
+{
+ s32 ret = 0;
+ struct device *dev = &cpt->pdev->dev;
+
+ ret = cpt_ucode_load_fw(cpt, "cpt8x-mc-ae.out", true);
+ if (ret) {
+ dev_err(dev, "ae:cpt_ucode_load failed with ret: %d\n", ret);
+ return ret;
+ }
+ ret = cpt_ucode_load_fw(cpt, "cpt8x-mc-se.out", false);
+ if (ret) {
+ dev_err(dev, "se:cpt_ucode_load failed with ret: %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static s32 cpt_enable_msix(struct cpt_device *cpt)
+{
+ s32 i, ret;
+
+ cpt->num_vec = CPT_PF_MSIX_VECTORS;
+
+ for (i = 0; i < cpt->num_vec; i++)
+ cpt->msix_entries[i].entry = i;
+
+ ret = pci_enable_msix(cpt->pdev, cpt->msix_entries, cpt->num_vec);
+ if (ret) {
+ dev_err(&cpt->pdev->dev, "Request for #%d msix vectors failed\n",
+ cpt->num_vec);
+ return ret;
+ }
+
+ cpt->msix_enabled = 1;
+ return 0;
+}
+
+static irqreturn_t cpt_mbx0_intr_handler (s32 irq, void *cpt_irq)
+{
+ struct cpt_device *cpt = (struct cpt_device *)cpt_irq;
+
+ cpt_mbox_intr_handler(cpt, 0);
+
+ return IRQ_HANDLED;
+}
+
+static void cpt_disable_msix(struct cpt_device *cpt)
+{
+ if (cpt->msix_enabled) {
+ pci_disable_msix(cpt->pdev);
+ cpt->msix_enabled = 0;
+ cpt->num_vec = 0;
+ }
+}
+
+static void cpt_free_all_interrupts(struct cpt_device *cpt)
+{
+ s32 irq;
+
+ for (irq = 0; irq < cpt->num_vec; irq++) {
+ if (cpt->irq_allocated[irq])
+ free_irq(cpt->msix_entries[irq].vector, cpt);
+ cpt->irq_allocated[irq] = false;
+ }
+}
+
+static void cpt_reset(struct cpt_device *cpt)
+{
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_RESET(0), 1);
+}
+
+static void cpt_find_max_enabled_cores(struct cpt_device *cpt)
+{
+ union cptx_pf_constants pf_cnsts = {0};
+
+ pf_cnsts.u = cpt_read_csr64(cpt->reg_base, CPTX_PF_CONSTANTS(0));
+ cpt->max_se_cores = pf_cnsts.s.se;
+ cpt->max_ae_cores = pf_cnsts.s.ae;
+}
+
+static u32 cpt_check_bist_status(struct cpt_device *cpt)
+{
+ union cptx_pf_bist_status bist_sts = {0};
+
+ bist_sts.u = cpt_read_csr64(cpt->reg_base,
+ CPTX_PF_BIST_STATUS(0));
+
+ return bist_sts.u;
+}
+
+static u64 cpt_check_exe_bist_status(struct cpt_device *cpt)
+{
+ union cptx_pf_exe_bist_status bist_sts = {0};
+
+ bist_sts.u = cpt_read_csr64(cpt->reg_base,
+ CPTX_PF_EXE_BIST_STATUS(0));
+
+ return bist_sts.u;
+}
+
+static void cpt_disable_all_cores(struct cpt_device *cpt)
+{
+ u32 grp, timeout = 0xFFFFFFFF;
+ struct device *dev = &cpt->pdev->dev;
+
+ /* Disengage the cores from groups */
+ for (grp = 0; grp < CPT_MAX_CORE_GROUPS; grp++) {
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp), 0);
+ udelay(CSR_DELAY);
+ }
+
+ grp = cpt_read_csr64(cpt->reg_base, CPTX_PF_EXEC_BUSY(0));
+ while (grp) {
+ dev_err(dev, "Cores still busy");
+ grp = cpt_read_csr64(cpt->reg_base,
+ CPTX_PF_EXEC_BUSY(0));
+ if (timeout--)
+ break;
+ }
+ /* Disable the cores */
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0), 0);
+}
+
+/**
+ * Ensure all cores are disenganed from all groups by
+ * calling cpt_disable_all_cores() before calling this
+ * function.
+ */
+static void cpt_unload_microcode(struct cpt_device *cpt)
+{
+ u32 grp = 0, core;
+
+ /* Free microcode bases and reset group masks */
+ for (grp = 0; grp < CPT_MAX_CORE_GROUPS; grp++) {
+ struct microcode *mcode = &cpt->mcode[grp];
+
+ if (cpt->mcode[grp].code)
+ dma_free_coherent(&cpt->pdev->dev, mcode->code_size,
+ mcode->code, mcode->phys_base);
+ mcode->code = NULL;
+ //mcode->base = NULL;
+ }
+ /* Clear UCODE_BASE registers for all engines */
+ for (core = 0; core < CPT_MAX_TOTAL_CORES; core++)
+ cpt_write_csr64(cpt->reg_base,
+ CPTX_PF_ENGX_UCODE_BASE(0, core), 0ull);
+}
+
+static s32 cpt_device_init(struct cpt_device *cpt)
+{
+ u64 bist;
+ struct device *dev = &cpt->pdev->dev;
+
+ /* Reset the PF when probed first */
+ cpt_reset(cpt);
+ mdelay((100));
+
+ /*Check BIST status*/
+ bist = (u64)cpt_check_bist_status(cpt);
+ if (bist) {
+ dev_err(dev, "RAM BIST failed with code 0x%llx", bist);
+ return -ENODEV;
+ }
+
+ bist = cpt_check_exe_bist_status(cpt);
+ if (bist) {
+ dev_err(dev, "Engine BIST failed with code 0x%llx", bist);
+ return -ENODEV;
+ }
+
+ /*Get CLK frequency*/
+ /*Get max enabled cores */
+ cpt_find_max_enabled_cores(cpt);
+ /*Disable all cores*/
+ cpt_disable_all_cores(cpt);
+ /*Reset device parameters*/
+ cpt->next_mc_idx = 0;
+ cpt->next_group = 0;
+ /* PF is ready */
+ cpt->flags |= CPT_FLAG_DEVICE_READY;
+
+ return 0;
+}
+
+static s32 cpt_register_interrupts(struct cpt_device *cpt)
+{
+ s32 ret;
+ struct device *dev = &cpt->pdev->dev;
+
+ /* Enable MSI-X */
+ ret = cpt_enable_msix(cpt);
+ if (ret)
+ return ret;
+
+ /* Register mailbox interrupt handlers */
+ ret = request_irq(cpt->msix_entries[CPT_PF_INT_VEC_E_MBOXX(0)].vector,
+ cpt_mbx0_intr_handler, 0, "CPT Mbox0", cpt);
+ if (ret)
+ goto fail;
+
+ cpt->irq_allocated[CPT_PF_INT_VEC_E_MBOXX(0)] = true;
+
+ /* Enable mailbox interrupt */
+ cpt_enable_mbox_interrupts(cpt);
+ return 0;
+
+fail:
+ dev_err(dev, "Request irq failed\n");
+ cpt_free_all_interrupts(cpt);
+ return ret;
+}
+
+static void cpt_unregister_interrupts(struct cpt_device *cpt)
+{
+ cpt_free_all_interrupts(cpt);
+ cpt_disable_msix(cpt);
+}
+
+static s32 cpt_sriov_init(struct cpt_device *cpt, s32 num_vfs)
+{
+ s32 pos = 0;
+ s32 err;
+ u16 total_vf_cnt;
+ struct pci_dev *pdev = cpt->pdev;
+
+ pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
+ if (!pos) {
+ dev_err(&pdev->dev, "SRIOV capability is not found in PCIe config space\n");
+ return -ENODEV;
+ }
+
+ cpt->num_vf_en = num_vfs; /* User requested VFs */
+ pci_read_config_word(pdev, (pos + PCI_SRIOV_TOTAL_VF), &total_vf_cnt);
+ if (total_vf_cnt < cpt->num_vf_en)
+ cpt->num_vf_en = total_vf_cnt;
+
+ if (!total_vf_cnt)
+ return 0;
+
+ /*Enabled the available VFs */
+ err = pci_enable_sriov(pdev, cpt->num_vf_en);
+ if (err) {
+ dev_err(&pdev->dev, "SRIOV enable failed, num VF is %d\n",
+ cpt->num_vf_en);
+ cpt->num_vf_en = 0;
+ return err;
+ }
+
+ /* TODO: Optionally enable static VQ priorities feature */
+
+ dev_info(&pdev->dev, "SRIOV enabled, number of VF available %d\n",
+ cpt->num_vf_en);
+
+ cpt->flags |= CPT_FLAG_SRIOV_ENABLED;
+
+ return 0;
+}
+
+static s32 cpt_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct device *dev = &pdev->dev;
+ struct cpt_device *cpt;
+ s32 err;
+
+ cpt = devm_kzalloc(dev, sizeof(struct cpt_device), GFP_KERNEL);
+ if (!cpt)
+ return -ENOMEM;
+
+ pci_set_drvdata(pdev, cpt);
+ cpt->pdev = pdev;
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(dev, "Failed to enable PCI device\n");
+ pci_set_drvdata(pdev, NULL);
+ return err;
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(dev, "PCI request regions failed 0x%x\n", err);
+ goto cpt_err_disable_device;
+ }
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "Unable to get usable DMA configuration\n");
+ goto cpt_err_release_regions;
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "Unable to get 48-bit DMA for consistent allocations\n");
+ goto cpt_err_release_regions;
+ }
+
+ /* MAP PF's configuration registers */
+ cpt->reg_base = pcim_iomap(pdev, 0, 0);
+ if (!cpt->reg_base) {
+ dev_err(dev, "Cannot map config register space, aborting\n");
+ err = -ENOMEM;
+ goto cpt_err_release_regions;
+ }
+
+ /* CPT device HW initialization */
+ cpt_device_init(cpt);
+
+ /* Register interrupts */
+ err = cpt_register_interrupts(cpt);
+ if (err)
+ goto cpt_err_release_regions;
+
+ err = cpt_ucode_load(cpt);
+ if (err)
+ goto cpt_err_unregister_interrupts;
+
+ /* Configure SRIOV */
+ err = cpt_sriov_init(cpt, num_vfs);
+ if (err)
+ goto cpt_err_unregister_interrupts;
+
+ return 0;
+
+cpt_err_unregister_interrupts:
+ cpt_unregister_interrupts(cpt);
+cpt_err_release_regions:
+ pci_release_regions(pdev);
+cpt_err_disable_device:
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ return err;
+}
+
+static void cpt_remove(struct pci_dev *pdev)
+{
+ struct cpt_device *cpt = pci_get_drvdata(pdev);
+
+ /* Disengage SE and AE cores from all groups*/
+ cpt_disable_all_cores(cpt);
+ /* Unload microcodes */
+ cpt_unload_microcode(cpt);
+ cpt_unregister_interrupts(cpt);
+ pci_disable_sriov(pdev);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+}
+
+static void cpt_shutdown(struct pci_dev *pdev)
+{
+ struct cpt_device *cpt = pci_get_drvdata(pdev);
+
+ if (!cpt)
+ return;
+
+ dev_info(&pdev->dev, "Shutdown device %x:%x.\n",
+ (u32)pdev->vendor, (u32)pdev->device);
+
+ cpt_unregister_interrupts(cpt);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ kzfree(cpt);
+}
+
+/* Supported devices */
+static const struct pci_device_id cpt_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, CPT_81XX_PCI_PF_DEVICE_ID) },
+ { 0, } /* end of table */
+};
+
+static struct pci_driver cpt_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = cpt_id_table,
+ .probe = cpt_probe,
+ .remove = cpt_remove,
+ .shutdown = cpt_shutdown,
+};
+
+static s32 __init cpt_init_module(void)
+{
+ s32 ret = -1;
+
+ pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION);
+
+ if (num_vfs > 16) {
+ pr_warn("Invalid vf count %d, Resetting it to 1(default)\n",
+ num_vfs);
+ num_vfs = 4;
+ }
+
+ ret = pci_register_driver(&cpt_pci_driver);
+ if (ret)
+ pr_err("pci_register_driver() failed");
+
+ return ret;
+}
+
+static void __exit cpt_cleanup_module(void)
+{
+ pci_unregister_driver(&cpt_pci_driver);
+}
+
+module_init(cpt_init_module);
+module_exit(cpt_cleanup_module);
+
+MODULE_AUTHOR("George Cherian <[email protected]>");
+MODULE_DESCRIPTION("Cavium Thunder CPT Physical Function Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DEVICE_TABLE(pci, cpt_id_table);
diff --git a/drivers/crypto/cavium/cpt/cptpf_mbox.c b/drivers/crypto/cavium/cpt/cptpf_mbox.c
new file mode 100644
index 0000000..1039a5f
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptpf_mbox.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include "cptpf.h"
+
+static void cpt_send_msg_to_vf(struct cpt_device *cpt, s32 vf,
+ struct cpt_mbox *mbx)
+{
+ /* Writing mbox(0) causes interrupt */
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_VFX_MBOXX(0, vf, 1),
+ mbx->data);
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_VFX_MBOXX(0, vf, 0), mbx->msg);
+}
+
+/* ACKs VF's mailbox message
+ * @vf: VF to which ACK to be sent
+ */
+static void cpt_mbox_send_ack(struct cpt_device *cpt, s32 vf,
+ struct cpt_mbox *mbx)
+{
+ mbx->data = 0ull;
+ mbx->msg = CPT_MBOX_MSG_TYPE_ACK;
+ cpt_send_msg_to_vf(cpt, vf, mbx);
+}
+
+static void cpt_clear_mbox_intr(struct cpt_device *cpt, u32 vf)
+{
+ /* W1C for the VF */
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_MBOX_INTX(0, 0), (1 << vf));
+}
+
+/*
+ * Configure QLEN/Chunk sizes for VF
+ */
+static void cpt_cfg_qlen_for_vf(struct cpt_device *cpt, s32 vf, u32 size)
+{
+ union cptx_pf_qx_ctl pf_qx_ctl;
+
+ pf_qx_ctl.u = cpt_read_csr64(cpt->reg_base, CPTX_PF_QX_CTL(0, vf));
+ pf_qx_ctl.s.size = size;
+ pf_qx_ctl.s.cont_err = true;
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_QX_CTL(0, vf), pf_qx_ctl.u);
+}
+
+/*
+ * Configure VQ priority
+ */
+static void cpt_cfg_vq_priority(struct cpt_device *cpt, s32 vf, u32 pri)
+{
+ union cptx_pf_qx_ctl pf_qx_ctl;
+
+ pf_qx_ctl.u = cpt_read_csr64(cpt->reg_base, CPTX_PF_QX_CTL(0, vf));
+ pf_qx_ctl.s.pri = pri;
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_QX_CTL(0, vf), pf_qx_ctl.u);
+}
+
+static u8 cpt_bind_vq_to_grp(struct cpt_device *cpt, u8 q, u8 grp)
+{
+ struct microcode *mcode = cpt->mcode;
+ union cptx_pf_qx_ctl pf_qx_ctl;
+ struct device *dev = &cpt->pdev->dev;
+
+ if (q >= CPT_MAX_VF_NUM) {
+ dev_err(dev, "Queues are more than cores in the group");
+ return -EINVAL;
+ }
+ if (grp >= CPT_MAX_CORE_GROUPS) {
+ dev_err(dev, "Request group is more than possible groups");
+ return -EINVAL;
+ }
+ if (grp >= cpt->next_mc_idx) {
+ dev_err(dev, "Request group is higher than available functional groups");
+ return -EINVAL;
+ }
+ pf_qx_ctl.u = cpt_read_csr64(cpt->reg_base, CPTX_PF_QX_CTL(0, q));
+ pf_qx_ctl.s.grp = mcode[grp].group;
+ cpt_write_csr64(cpt->reg_base, CPTX_PF_QX_CTL(0, q), pf_qx_ctl.u);
+ dev_dbg(dev, "VF %d TYPE %s", q, (mcode[grp].is_ae ? "AE" : "SE"));
+
+ return mcode[grp].is_ae ? AE_TYPES : SE_TYPES;
+}
+
+/* Interrupt handler to handle mailbox messages from VFs */
+static void cpt_handle_mbox_intr(struct cpt_device *cpt, s32 vf)
+{
+ struct cpt_vf_info *vfx = &cpt->vfinfo[vf];
+ struct cpt_mbox mbx = {};
+ u8 vftype;
+ struct device *dev = &cpt->pdev->dev;
+ /*
+ * MBOX[0] contains msg
+ * MBOX[1] contains data
+ */
+ mbx.msg = cpt_read_csr64(cpt->reg_base, CPTX_PF_VFX_MBOXX(0, vf, 0));
+ mbx.data = cpt_read_csr64(cpt->reg_base, CPTX_PF_VFX_MBOXX(0, vf, 1));
+ dev_dbg(dev, "%s: Mailbox msg 0x%llx from VF%d", __func__, mbx.msg, vf);
+ switch (mbx.msg) {
+ case CPT_MSG_VF_UP:
+ vfx->state = VF_STATE_UP;
+ try_module_get(THIS_MODULE);
+ cpt_mbox_send_ack(cpt, vf, &mbx);
+ break;
+ case CPT_MSG_READY:
+ mbx.msg = CPT_MSG_READY;
+ mbx.data = vf;
+ cpt_send_msg_to_vf(cpt, vf, &mbx);
+ break;
+ case CPT_MSG_VF_DOWN:
+ /* First msg in VF teardown sequence */
+ vfx->state = VF_STATE_DOWN;
+ module_put(THIS_MODULE);
+ cpt_mbox_send_ack(cpt, vf, &mbx);
+ break;
+ case CPT_MSG_QLEN:
+ vfx->qlen = mbx.data;
+ cpt_cfg_qlen_for_vf(cpt, vf, vfx->qlen);
+ cpt_mbox_send_ack(cpt, vf, &mbx);
+ break;
+ case CPT_MSG_QBIND_GRP:
+ vftype = cpt_bind_vq_to_grp(cpt, vf, (u8)mbx.data);
+ if ((vftype != AE_TYPES) && (vftype != SE_TYPES))
+ dev_err(dev, "Queue %d binding to group %llu failed",
+ vf, mbx.data);
+ else {
+ dev_dbg(dev, "Queue %d binding to group %llu successful",
+ vf, mbx.data);
+ mbx.msg = CPT_MSG_QBIND_GRP;
+ mbx.data = vftype;
+ cpt_send_msg_to_vf(cpt, vf, &mbx);
+ }
+ break;
+ case CPT_MSG_VQ_PRIORITY:
+ vfx->priority = mbx.data;
+ cpt_cfg_vq_priority(cpt, vf, vfx->priority);
+ cpt_mbox_send_ack(cpt, vf, &mbx);
+ break;
+ default:
+ dev_err(&cpt->pdev->dev, "Invalid msg from VF%d, msg 0x%llx\n",
+ vf, mbx.msg);
+ break;
+ }
+}
+
+void cpt_mbox_intr_handler (struct cpt_device *cpt, s32 mbx)
+{
+ u64 intr;
+ u8 vf;
+
+ intr = cpt_read_csr64(cpt->reg_base, CPTX_PF_MBOX_INTX(0, 0));
+ dev_dbg(&cpt->pdev->dev, "PF interrupt Mbox%d 0x%llx\n", mbx, intr);
+ for (vf = 0; vf < CPT_MAX_VF_NUM; vf++) {
+ if (intr & (1ULL << vf)) {
+ dev_dbg(&cpt->pdev->dev, "Intr from VF %d\n", vf);
+ cpt_handle_mbox_intr(cpt, vf);
+ cpt_clear_mbox_intr(cpt, vf);
+ }
+ }
+}
--
2.1.4
Hi,
I got few review comments for this series from David Daney.
I am reworking on this series and will sent v3 once it is done.
So,kindly ignore this series
Regards,
-George
On 12/13/2016 07:33 PM, George Cherian wrote:
>
> This series adds the support for Cavium Cryptographic Accelerarion Unit (CPT)
> CPT is available in Cavium's Octeon-Tx SoC series.
>
> The series was tested with ecryptfs and dm-crypt for in kernel cryptographic
> offload operations.
>
> Changes v1 -> v2
> -- Addressed a crash issue when more gather components are passed.
> -- Redo the cptvf request manager.
> - Get rid of the un necessary buffer copies.
> -- s/uint*_t/u*
> -- Remove unwanted Macro definitions
> -- Remove the redundant ROUNDUP* macros and use kernel function
> -- Select proper config option in Kconfig file.
> -- Removed some of the unwanted header file inclusions
> -- Miscellaneous Cleanup
>
> George Cherian (3):
> drivers: crypto: Add Support for Octeon-tx CPT Engine
> drivers: crypto: Add the Virtual Function driver for CPT
> drivers: crypto: Enable CPT options crypto for build
>
> drivers/crypto/Kconfig | 1 +
> drivers/crypto/Makefile | 1 +
> drivers/crypto/cavium/cpt/Kconfig | 16 +
> drivers/crypto/cavium/cpt/Makefile | 3 +
> drivers/crypto/cavium/cpt/cpt_common.h | 166 +++++
> drivers/crypto/cavium/cpt/cpt_hw_types.h | 736 ++++++++++++++++++++
> drivers/crypto/cavium/cpt/cptpf.h | 69 ++
> drivers/crypto/cavium/cpt/cptpf_main.c | 733 ++++++++++++++++++++
> drivers/crypto/cavium/cpt/cptpf_mbox.c | 163 +++++
> drivers/crypto/cavium/cpt/cptvf.h | 145 ++++
> drivers/crypto/cavium/cpt/cptvf_algs.c | 424 ++++++++++++
> drivers/crypto/cavium/cpt/cptvf_algs.h | 110 +++
> drivers/crypto/cavium/cpt/cptvf_main.c | 971 +++++++++++++++++++++++++++
> drivers/crypto/cavium/cpt/cptvf_mbox.c | 205 ++++++
> drivers/crypto/cavium/cpt/cptvf_reqmanager.c | 581 ++++++++++++++++
> drivers/crypto/cavium/cpt/request_manager.h | 147 ++++
> 16 files changed, 4471 insertions(+)
> create mode 100644 drivers/crypto/cavium/cpt/Kconfig
> create mode 100644 drivers/crypto/cavium/cpt/Makefile
> create mode 100644 drivers/crypto/cavium/cpt/cpt_common.h
> create mode 100644 drivers/crypto/cavium/cpt/cpt_hw_types.h
> create mode 100644 drivers/crypto/cavium/cpt/cptpf.h
> create mode 100644 drivers/crypto/cavium/cpt/cptpf_main.c
> create mode 100644 drivers/crypto/cavium/cpt/cptpf_mbox.c
> create mode 100644 drivers/crypto/cavium/cpt/cptvf.h
> create mode 100644 drivers/crypto/cavium/cpt/cptvf_algs.c
> create mode 100644 drivers/crypto/cavium/cpt/cptvf_algs.h
> create mode 100644 drivers/crypto/cavium/cpt/cptvf_main.c
> create mode 100644 drivers/crypto/cavium/cpt/cptvf_mbox.c
> create mode 100644 drivers/crypto/cavium/cpt/cptvf_reqmanager.c
> create mode 100644 drivers/crypto/cavium/cpt/request_manager.h
>