From patchwork Tue May 16 21:50:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tom Zanussi X-Patchwork-Id: 13243921 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71CC1C7EE24 for ; Tue, 16 May 2023 21:51:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229873AbjEPVvC (ORCPT ); Tue, 16 May 2023 17:51:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33192 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231250AbjEPVum (ORCPT ); Tue, 16 May 2023 17:50:42 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A4977ED2; Tue, 16 May 2023 14:50:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1684273828; x=1715809828; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nx1IHmnmDllG9Q7UE1IZact6wTcEv/CISKDtDpubzbA=; b=IecyWP0mu6oaLrPrCqIvylOupahAipg5CiDY7JgCjZ7JI37FRYy3vF1s 5bvX5euY1rF0V6k0zB2e07gIQIB2fO/Pvi5IpSNJ0KHbfzNehYMjP5VrA ls6iyAgrVs2B0YZo6KxQOy3IdCgFW06qLUcV6tJDsg5t9CZi+xvVpeNKK k3yiD7IpDzFflEoSsUb0LbpZ4ex7+MD2gl/7f1j+r9ES4/sJD92UetuTK 51lRgTBWHrxizzQkfu2d7mVXcf3xuLVEnTZulUlKeWU4PQd3WSTq2r9ed 4JEdGQ5GW93IIeSsazO1eq+I1YqIn6HiPuNAd3UO5KQ0Ij0MPPNupEXb1 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10712"; a="331961688" X-IronPort-AV: E=Sophos;i="5.99,278,1677571200"; d="scan'208";a="331961688" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2023 14:50:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10712"; a="704564967" X-IronPort-AV: E=Sophos;i="5.99,278,1677571200"; d="scan'208";a="704564967" Received: from fmunozug-mobl1.amr.corp.intel.com (HELO tzanussi-mobl1.intel.com) ([10.212.83.116]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2023 14:50:26 -0700 From: Tom Zanussi To: herbert@gondor.apana.org.au, davem@davemloft.net, fenghua.yu@intel.com, vkoul@kernel.org Cc: dave.jiang@intel.com, tony.luck@intel.com, wajdi.k.feghali@intel.com, james.guilford@intel.com, kanchana.p.sridhar@intel.com, giovanni.cabiddu@intel.com, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, dmaengine@vger.kernel.org Subject: [PATCH v5 07/15] dmaengine: idxd: add callback support for iaa crypto Date: Tue, 16 May 2023 16:50:01 -0500 Message-Id: <20230516215009.51794-8-tom.zanussi@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230516215009.51794-1-tom.zanussi@linux.intel.com> References: <20230516215009.51794-1-tom.zanussi@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Create a lightweight callback interface to allow idxd sub-drivers to be notified when work sent to idxd wqs has completed. For a sub-driver to be notified of work completion, it needs to: - Set the descriptor's 'Request Completion Interrupt' (IDXD_OP_FLAG_RCI) - Set the sub-driver desc_complete() callback when registering the sub-driver e.g.: struct idxd_device_driver my_drv = { .probe = my_probe, .desc_complete = my_complete, } - Set the sub-driver-specific context in the sub-driver's descriptor e.g: idxd_desc->crypto.req = req; idxd_desc->crypto.tfm = tfm; idxd_desc->crypto.src_addr = src_addr; idxd_desc->crypto.dst_addr = dst_addr; When the work completes and the completion irq fires, idxd will invoke the desc_complete() callback with pointers to the descriptor, context, and completion_type. Signed-off-by: Dave Jiang Signed-off-by: Tom Zanussi Reviewed-by: Fenghua Yu --- drivers/dma/idxd/device.c | 2 +- drivers/dma/idxd/dma.c | 3 +- drivers/dma/idxd/idxd.h | 62 ++++++++++++++++++++++++++++++++------- drivers/dma/idxd/irq.c | 12 ++++---- drivers/dma/idxd/submit.c | 6 ++-- 5 files changed, 65 insertions(+), 20 deletions(-) diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c index 626600bd394b..0e2fbec79449 100644 --- a/drivers/dma/idxd/device.c +++ b/drivers/dma/idxd/device.c @@ -1289,7 +1289,7 @@ static void idxd_flush_pending_descs(struct idxd_irq_entry *ie) tx = &desc->txd; tx->callback = NULL; tx->callback_result = NULL; - idxd_dma_complete_txd(desc, ctype, true); + idxd_dma_complete_txd(desc, ctype, true, NULL, NULL); } } diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c index 8bb7e7ff8d6a..9a12b02b0549 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -22,7 +22,7 @@ static inline struct idxd_wq *to_idxd_wq(struct dma_chan *c) void idxd_dma_complete_txd(struct idxd_desc *desc, enum idxd_complete_type comp_type, - bool free_desc) + bool free_desc, void *ctx, u32 *status) { struct idxd_device *idxd = desc->wq->idxd; struct dma_async_tx_descriptor *tx; @@ -358,6 +358,7 @@ static enum idxd_dev_type dev_types[] = { struct idxd_device_driver idxd_dmaengine_drv = { .probe = idxd_dmaengine_drv_probe, .remove = idxd_dmaengine_drv_remove, + .desc_complete = idxd_dma_complete_txd, .name = "dmaengine", .type = dev_types, }; diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 971daf323655..364dbe8cb271 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -13,6 +13,7 @@ #include #include #include +#include #include #include "registers.h" @@ -57,11 +58,23 @@ enum idxd_type { #define IDXD_ENQCMDS_RETRIES 32 #define IDXD_ENQCMDS_MAX_RETRIES 64 +enum idxd_complete_type { + IDXD_COMPLETE_NORMAL = 0, + IDXD_COMPLETE_ABORT, + IDXD_COMPLETE_DEV_FAIL, +}; + +struct idxd_desc; + struct idxd_device_driver { const char *name; enum idxd_dev_type *type; int (*probe)(struct idxd_dev *idxd_dev); void (*remove)(struct idxd_dev *idxd_dev); + void (*desc_complete)(struct idxd_desc *desc, + enum idxd_complete_type comp_type, + bool free_desc, + void *ctx, u32 *status); struct device_driver drv; }; @@ -174,12 +187,6 @@ enum idxd_op_type { IDXD_OP_NONBLOCK = 1, }; -enum idxd_complete_type { - IDXD_COMPLETE_NORMAL = 0, - IDXD_COMPLETE_ABORT, - IDXD_COMPLETE_DEV_FAIL, -}; - struct idxd_dma_chan { struct dma_chan chan; struct idxd_wq *wq; @@ -378,6 +385,14 @@ static inline unsigned int evl_size(struct idxd_device *idxd) return idxd->evl->size * evl_ent_size(idxd); } +struct crypto_ctx { + struct acomp_req *req; + struct crypto_tfm *tfm; + dma_addr_t src_addr; + dma_addr_t dst_addr; + bool compress; +}; + /* IDXD software descriptor */ struct idxd_desc { union { @@ -390,7 +405,10 @@ struct idxd_desc { struct iax_completion_record *iax_completion; }; dma_addr_t compl_dma; - struct dma_async_tx_descriptor txd; + union { + struct dma_async_tx_descriptor txd; + struct crypto_ctx crypto; + }; struct llist_node llnode; struct list_head list; int id; @@ -417,6 +435,15 @@ enum idxd_completion_status { #define idxd_dev_to_idxd(idxd_dev) container_of(idxd_dev, struct idxd_device, idxd_dev) #define idxd_dev_to_wq(idxd_dev) container_of(idxd_dev, struct idxd_wq, idxd_dev) +static inline struct idxd_device_driver *wq_to_idxd_drv(struct idxd_wq *wq) +{ + struct device *dev = wq_confdev(wq); + struct idxd_device_driver *idxd_drv = + container_of(dev->driver, struct idxd_device_driver, drv); + + return idxd_drv; +} + static inline struct idxd_device *confdev_to_idxd(struct device *dev) { struct idxd_dev *idxd_dev = confdev_to_idxd_dev(dev); @@ -669,6 +696,24 @@ void idxd_driver_unregister(struct idxd_device_driver *idxd_drv); #define module_idxd_driver(__idxd_driver) \ module_driver(__idxd_driver, idxd_driver_register, idxd_driver_unregister) +void idxd_free_desc(struct idxd_wq *wq, struct idxd_desc *desc); +void idxd_dma_complete_txd(struct idxd_desc *desc, + enum idxd_complete_type comp_type, + bool free_desc, void *ctx, u32 *status); + +static inline void idxd_desc_complete(struct idxd_desc *desc, + enum idxd_complete_type comp_type, + bool free_desc) +{ + struct idxd_device_driver *drv; + u32 status; + + drv = wq_to_idxd_drv(desc->wq); + if (drv->desc_complete) + drv->desc_complete(desc, comp_type, free_desc, + &desc->txd, &status); +} + int idxd_register_bus_type(void); void idxd_unregister_bus_type(void); int idxd_register_devices(struct idxd_device *idxd); @@ -726,15 +771,12 @@ int idxd_wq_request_irq(struct idxd_wq *wq); /* submission */ int idxd_submit_desc(struct idxd_wq *wq, struct idxd_desc *desc); struct idxd_desc *idxd_alloc_desc(struct idxd_wq *wq, enum idxd_op_type optype); -void idxd_free_desc(struct idxd_wq *wq, struct idxd_desc *desc); int idxd_enqcmds(struct idxd_wq *wq, void __iomem *portal, const void *desc); /* dmaengine */ int idxd_register_dma_device(struct idxd_device *idxd); void idxd_unregister_dma_device(struct idxd_device *idxd); void idxd_parse_completion_status(u8 status, enum dmaengine_tx_result *res); -void idxd_dma_complete_txd(struct idxd_desc *desc, - enum idxd_complete_type comp_type, bool free_desc); /* cdev */ int idxd_cdev_register(void); diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c index b501320a9c7a..c889ec8817e2 100644 --- a/drivers/dma/idxd/irq.c +++ b/drivers/dma/idxd/irq.c @@ -123,7 +123,7 @@ static void idxd_abort_invalid_int_handle_descs(struct idxd_irq_entry *ie) list_for_each_entry_safe(d, t, &flist, list) { list_del(&d->list); - idxd_dma_complete_txd(d, IDXD_COMPLETE_ABORT, true); + idxd_desc_complete(d, IDXD_COMPLETE_ABORT, true); } } @@ -534,7 +534,7 @@ static void idxd_int_handle_resubmit_work(struct work_struct *work) */ if (rc != -EAGAIN) { desc->completion->status = IDXD_COMP_DESC_ABORT; - idxd_dma_complete_txd(desc, IDXD_COMPLETE_ABORT, false); + idxd_desc_complete(desc, IDXD_COMPLETE_ABORT, false); } idxd_free_desc(wq, desc); } @@ -575,11 +575,11 @@ static void irq_process_pending_llist(struct idxd_irq_entry *irq_entry) * and 0xff, which DSA_COMP_STATUS_MASK can mask out. */ if (unlikely(desc->completion->status == IDXD_COMP_DESC_ABORT)) { - idxd_dma_complete_txd(desc, IDXD_COMPLETE_ABORT, true); + idxd_desc_complete(desc, IDXD_COMPLETE_ABORT, true); continue; } - idxd_dma_complete_txd(desc, IDXD_COMPLETE_NORMAL, true); + idxd_desc_complete(desc, IDXD_COMPLETE_NORMAL, true); } else { spin_lock(&irq_entry->list_lock); list_add_tail(&desc->list, @@ -618,11 +618,11 @@ static void irq_process_work_list(struct idxd_irq_entry *irq_entry) * and 0xff, which DSA_COMP_STATUS_MASK can mask out. */ if (unlikely(desc->completion->status == IDXD_COMP_DESC_ABORT)) { - idxd_dma_complete_txd(desc, IDXD_COMPLETE_ABORT, true); + idxd_desc_complete(desc, IDXD_COMPLETE_ABORT, true); continue; } - idxd_dma_complete_txd(desc, IDXD_COMPLETE_NORMAL, true); + idxd_desc_complete(desc, IDXD_COMPLETE_NORMAL, true); } } diff --git a/drivers/dma/idxd/submit.c b/drivers/dma/idxd/submit.c index 5e651e216094..f927743a5ba2 100644 --- a/drivers/dma/idxd/submit.c +++ b/drivers/dma/idxd/submit.c @@ -127,7 +127,8 @@ static void llist_abort_desc(struct idxd_wq *wq, struct idxd_irq_entry *ie, spin_unlock(&ie->list_lock); if (found) - idxd_dma_complete_txd(found, IDXD_COMPLETE_ABORT, false); + idxd_dma_complete_txd(found, IDXD_COMPLETE_ABORT, false, + NULL, NULL); /* * completing the descriptor will return desc to allocator and @@ -137,7 +138,8 @@ static void llist_abort_desc(struct idxd_wq *wq, struct idxd_irq_entry *ie, */ list_for_each_entry_safe(d, t, &flist, list) { list_del_init(&d->list); - idxd_dma_complete_txd(found, IDXD_COMPLETE_ABORT, true); + idxd_dma_complete_txd(found, IDXD_COMPLETE_ABORT, true, + NULL, NULL); } }