diff options
Diffstat (limited to 'drivers/crypto/ccree/cc_request_mgr.c')
| -rw-r--r-- | drivers/crypto/ccree/cc_request_mgr.c | 103 |
1 files changed, 20 insertions, 83 deletions
diff --git a/drivers/crypto/ccree/cc_request_mgr.c b/drivers/crypto/ccree/cc_request_mgr.c index a947d5a2cf35..9d61e6f12478 100644 --- a/drivers/crypto/ccree/cc_request_mgr.c +++ b/drivers/crypto/ccree/cc_request_mgr.c @@ -41,7 +41,6 @@ struct cc_req_mgr_handle { #else struct tasklet_struct comptask; #endif - bool is_runtime_suspended; }; struct cc_bl_item { @@ -230,7 +229,7 @@ static int cc_queues_status(struct cc_drvdata *drvdata, struct device *dev = drvdata_to_dev(drvdata); /* SW queue is checked only once as it will not - * be chaned during the poll because the spinlock_bh + * be changed during the poll because the spinlock_bh * is held by the thread */ if (((req_mgr_h->req_queue_head + 1) & (MAX_REQUEST_QUEUE_SIZE - 1)) == @@ -275,12 +274,11 @@ static int cc_queues_status(struct cc_drvdata *drvdata, * \param len The crypto sequence length * \param add_comp If "true": add an artificial dout DMA to mark completion * - * \return int Returns -EINPROGRESS or error code */ -static int cc_do_send_request(struct cc_drvdata *drvdata, - struct cc_crypto_req *cc_req, - struct cc_hw_desc *desc, unsigned int len, - bool add_comp) +static void cc_do_send_request(struct cc_drvdata *drvdata, + struct cc_crypto_req *cc_req, + struct cc_hw_desc *desc, unsigned int len, + bool add_comp) { struct cc_req_mgr_handle *req_mgr_h = drvdata->request_mgr_handle; unsigned int used_sw_slots; @@ -303,8 +301,8 @@ static int cc_do_send_request(struct cc_drvdata *drvdata, /* * We are about to push command to the HW via the command registers - * that may refernece hsot memory. We need to issue a memory barrier - * to make sure there are no outstnading memory writes + * that may reference host memory. We need to issue a memory barrier + * to make sure there are no outstanding memory writes */ wmb(); @@ -328,9 +326,6 @@ static int cc_do_send_request(struct cc_drvdata *drvdata, /* Update the free slots in HW queue */ req_mgr_h->q_free_slots -= total_seq_len; } - - /* Operation still in process */ - return -EINPROGRESS; } static void cc_enqueue_backlog(struct cc_drvdata *drvdata, @@ -390,20 +385,15 @@ static void cc_proc_backlog(struct cc_drvdata *drvdata) return; } - rc = cc_do_send_request(drvdata, &bli->creq, bli->desc, - bli->len, false); - + cc_do_send_request(drvdata, &bli->creq, bli->desc, bli->len, + false); spin_unlock(&mgr->hw_lock); - if (rc != -EINPROGRESS) { - cc_pm_put_suspend(dev); - creq->user_cb(dev, req, rc); - } - /* Remove ourselves from the backlog list */ spin_lock(&mgr->bl_lock); list_del(&bli->list); --mgr->bl_len; + kfree(bli); } spin_unlock(&mgr->bl_lock); @@ -422,7 +412,7 @@ int cc_send_request(struct cc_drvdata *drvdata, struct cc_crypto_req *cc_req, rc = cc_pm_get(dev); if (rc) { - dev_err(dev, "ssi_power_mgr_runtime_get returned %x\n", rc); + dev_err(dev, "cc_pm_get returned %x\n", rc); return rc; } @@ -451,8 +441,10 @@ int cc_send_request(struct cc_drvdata *drvdata, struct cc_crypto_req *cc_req, return -EBUSY; } - if (!rc) - rc = cc_do_send_request(drvdata, cc_req, desc, len, false); + if (!rc) { + cc_do_send_request(drvdata, cc_req, desc, len, false); + rc = -EINPROGRESS; + } spin_unlock_bh(&mgr->hw_lock); return rc; @@ -472,7 +464,7 @@ int cc_send_sync_request(struct cc_drvdata *drvdata, rc = cc_pm_get(dev); if (rc) { - dev_err(dev, "ssi_power_mgr_runtime_get returned %x\n", rc); + dev_err(dev, "cc_pm_get returned %x\n", rc); return rc; } @@ -492,14 +484,8 @@ int cc_send_sync_request(struct cc_drvdata *drvdata, reinit_completion(&drvdata->hw_queue_avail); } - rc = cc_do_send_request(drvdata, cc_req, desc, len, true); + cc_do_send_request(drvdata, cc_req, desc, len, true); spin_unlock_bh(&mgr->hw_lock); - - if (rc != -EINPROGRESS) { - cc_pm_put_suspend(dev); - return rc; - } - wait_for_completion(&cc_req->seq_compl); return 0; } @@ -532,8 +518,8 @@ int send_request_init(struct cc_drvdata *drvdata, struct cc_hw_desc *desc, /* * We are about to push command to the HW via the command registers - * that may refernece hsot memory. We need to issue a memory barrier - * to make sure there are no outstnading memory writes + * that may reference host memory. We need to issue a memory barrier + * to make sure there are no outstanding memory writes */ wmb(); enqueue_seq(drvdata, desc, len); @@ -668,7 +654,7 @@ static void comp_handler(unsigned long devarg) request_mgr_handle->axi_completed += cc_axi_comp_count(drvdata); } - /* after verifing that there is nothing to do, + /* after verifying that there is nothing to do, * unmask AXI completion interrupt */ cc_iowrite(drvdata, CC_REG(HOST_IMR), @@ -677,52 +663,3 @@ static void comp_handler(unsigned long devarg) cc_proc_backlog(drvdata); dev_dbg(dev, "Comp. handler done.\n"); } - -/* - * resume the queue configuration - no need to take the lock as this happens - * inside the spin lock protection - */ -#if defined(CONFIG_PM) -int cc_resume_req_queue(struct cc_drvdata *drvdata) -{ - struct cc_req_mgr_handle *request_mgr_handle = - drvdata->request_mgr_handle; - - spin_lock_bh(&request_mgr_handle->hw_lock); - request_mgr_handle->is_runtime_suspended = false; - spin_unlock_bh(&request_mgr_handle->hw_lock); - - return 0; -} - -/* - * suspend the queue configuration. Since it is used for the runtime suspend - * only verify that the queue can be suspended. - */ -int cc_suspend_req_queue(struct cc_drvdata *drvdata) -{ - struct cc_req_mgr_handle *request_mgr_handle = - drvdata->request_mgr_handle; - - /* lock the send_request */ - spin_lock_bh(&request_mgr_handle->hw_lock); - if (request_mgr_handle->req_queue_head != - request_mgr_handle->req_queue_tail) { - spin_unlock_bh(&request_mgr_handle->hw_lock); - return -EBUSY; - } - request_mgr_handle->is_runtime_suspended = true; - spin_unlock_bh(&request_mgr_handle->hw_lock); - - return 0; -} - -bool cc_req_queue_suspended(struct cc_drvdata *drvdata) -{ - struct cc_req_mgr_handle *request_mgr_handle = - drvdata->request_mgr_handle; - - return request_mgr_handle->is_runtime_suspended; -} - -#endif |