[for-next,v2,2/4] RDMA/erdma: Refactor the initialization and destruction of EQ

Message ID	20240828060944.77829-3-chengyou@linux.alibaba.com (mailing list archive)
State	Superseded
Headers	show Received: from out30-97.freemail.mail.aliyun.com (out30-97.freemail.mail.aliyun.com [115.124.30.97]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B62691552ED for <linux-rdma@vger.kernel.org>; Wed, 28 Aug 2024 06:09:55 +0000 (UTC) From: Cheng Xu <chengyou@linux.alibaba.com> To: jgg@ziepe.ca, leon@kernel.org Cc: linux-rdma@vger.kernel.org, KaiShen@linux.alibaba.com Subject: [PATCH for-next v2 2/4] RDMA/erdma: Refactor the initialization and destruction of EQ Date: Wed, 28 Aug 2024 14:09:42 +0800 Message-Id: <20240828060944.77829-3-chengyou@linux.alibaba.com> In-Reply-To: <20240828060944.77829-1-chengyou@linux.alibaba.com> References: <20240828060944.77829-1-chengyou@linux.alibaba.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	RDMA/erdma: erdma updates \| expand [for-next,v2,0/4] RDMA/erdma: erdma updates [for-next,v2,1/4] RDMA/erdma: Make the device probe process more robust [for-next,v2,2/4] RDMA/erdma: Refactor the initialization and destruction of EQ [for-next,v2,3/4] RDMA/erdma: Add disassociate ucontext support [for-next,v2,4/4] RDMA/erdma: Return QP state in erdma_query_qp

diff --git a/drivers/infiniband/hw/erdma/erdma.h b/drivers/infiniband/hw/erdma/erdma.h index b5c258f77ca0..f3b648dcf4b6 100644 --- a/drivers/infiniband/hw/erdma/erdma.h +++ b/drivers/infiniband/hw/erdma/erdma.h @@ -275,7 +275,8 @@ void notify_eq(struct erdma_eq *eq); void *get_next_valid_eqe(struct erdma_eq *eq); int erdma_aeq_init(struct erdma_dev *dev); -void erdma_aeq_destroy(struct erdma_dev *dev); +int erdma_eq_common_init(struct erdma_dev *dev, struct erdma_eq *eq, u32 depth); +void erdma_eq_destroy(struct erdma_dev *dev, struct erdma_eq *eq); void erdma_aeq_event_handler(struct erdma_dev *dev); void erdma_ceq_completion_handler(struct erdma_eq_cb *ceq_cb); diff --git a/drivers/infiniband/hw/erdma/erdma_cmdq.c b/drivers/infiniband/hw/erdma/erdma_cmdq.c index 43ff40b5a09d..a3d8922d1ad1 100644 --- a/drivers/infiniband/hw/erdma/erdma_cmdq.c +++ b/drivers/infiniband/hw/erdma/erdma_cmdq.c @@ -158,20 +158,13 @@ static int erdma_cmdq_eq_init(struct erdma_dev *dev) { struct erdma_cmdq *cmdq = &dev->cmdq; struct erdma_eq *eq = &cmdq->eq; + int ret; - eq->depth = cmdq->max_outstandings; - eq->qbuf = dma_alloc_coherent(&dev->pdev->dev, eq->depth << EQE_SHIFT, - &eq->qbuf_dma_addr, GFP_KERNEL); - if (!eq->qbuf) - return -ENOMEM; - - spin_lock_init(&eq->lock); - atomic64_set(&eq->event_num, 0); + ret = erdma_eq_common_init(dev, eq, cmdq->max_outstandings); + if (ret) + return ret; eq->db = dev->func_bar + ERDMA_REGS_CEQ_DB_BASE_REG; - eq->dbrec = dma_pool_zalloc(dev->db_pool, GFP_KERNEL, &eq->dbrec_dma); - if (!eq->dbrec) - goto err_out; erdma_reg_write32(dev, ERDMA_REGS_CMDQ_EQ_ADDR_H_REG, upper_32_bits(eq->qbuf_dma_addr)); @@ -181,12 +174,6 @@ static int erdma_cmdq_eq_init(struct erdma_dev *dev) erdma_reg_write64(dev, ERDMA_CMDQ_EQ_DB_HOST_ADDR_REG, eq->dbrec_dma); return 0; - -err_out: - dma_free_coherent(&dev->pdev->dev, eq->depth << EQE_SHIFT, eq->qbuf, - eq->qbuf_dma_addr); - - return -ENOMEM; } int erdma_cmdq_init(struct erdma_dev *dev) @@ -247,10 +234,7 @@ void erdma_cmdq_destroy(struct erdma_dev *dev) clear_bit(ERDMA_CMDQ_STATE_OK_BIT, &cmdq->state); - dma_free_coherent(&dev->pdev->dev, cmdq->eq.depth << EQE_SHIFT, - cmdq->eq.qbuf, cmdq->eq.qbuf_dma_addr); - - dma_pool_free(dev->db_pool, cmdq->eq.dbrec, cmdq->eq.dbrec_dma); + erdma_eq_destroy(dev, &cmdq->eq); dma_free_coherent(&dev->pdev->dev, cmdq->sq.depth << SQEBB_SHIFT, cmdq->sq.qbuf, cmdq->sq.qbuf_dma_addr); diff --git a/drivers/infiniband/hw/erdma/erdma_eq.c b/drivers/infiniband/hw/erdma/erdma_eq.c index 84ccdd8144c9..c277c8f9233c 100644 --- a/drivers/infiniband/hw/erdma/erdma_eq.c +++ b/drivers/infiniband/hw/erdma/erdma_eq.c @@ -80,50 +80,62 @@ void erdma_aeq_event_handler(struct erdma_dev *dev) notify_eq(&dev->aeq); } -int erdma_aeq_init(struct erdma_dev *dev) +int erdma_eq_common_init(struct erdma_dev *dev, struct erdma_eq *eq, u32 depth) { - struct erdma_eq *eq = &dev->aeq; + u32 buf_size = depth << EQE_SHIFT; - eq->depth = ERDMA_DEFAULT_EQ_DEPTH; - - eq->qbuf = dma_alloc_coherent(&dev->pdev->dev, eq->depth << EQE_SHIFT, - &eq->qbuf_dma_addr, GFP_KERNEL); + eq->qbuf = dma_alloc_coherent(&dev->pdev->dev, buf_size, + &eq->qbuf_dma_addr, + GFP_KERNEL | __GFP_ZERO); if (!eq->qbuf) return -ENOMEM; + eq->dbrec = dma_pool_alloc(dev->db_pool, GFP_KERNEL | __GFP_ZERO, + &eq->dbrec_dma); + if (!eq->dbrec) + goto err_free_qbuf; + spin_lock_init(&eq->lock); atomic64_set(&eq->event_num, 0); atomic64_set(&eq->notify_num, 0); - - eq->db = dev->func_bar + ERDMA_REGS_AEQ_DB_REG; - eq->dbrec = dma_pool_zalloc(dev->db_pool, GFP_KERNEL, &eq->dbrec_dma); - if (!eq->dbrec) - goto err_out; - - erdma_reg_write32(dev, ERDMA_REGS_AEQ_ADDR_H_REG, - upper_32_bits(eq->qbuf_dma_addr)); - erdma_reg_write32(dev, ERDMA_REGS_AEQ_ADDR_L_REG, - lower_32_bits(eq->qbuf_dma_addr)); - erdma_reg_write32(dev, ERDMA_REGS_AEQ_DEPTH_REG, eq->depth); - erdma_reg_write64(dev, ERDMA_AEQ_DB_HOST_ADDR_REG, eq->dbrec_dma); + eq->ci = 0; + eq->depth = depth; return 0; -err_out: - dma_free_coherent(&dev->pdev->dev, eq->depth << EQE_SHIFT, eq->qbuf, +err_free_qbuf: + dma_free_coherent(&dev->pdev->dev, buf_size, eq->qbuf, eq->qbuf_dma_addr); return -ENOMEM; } -void erdma_aeq_destroy(struct erdma_dev *dev) +void erdma_eq_destroy(struct erdma_dev *dev, struct erdma_eq *eq) { - struct erdma_eq *eq = &dev->aeq; - + dma_pool_free(dev->db_pool, eq->dbrec, eq->dbrec_dma); dma_free_coherent(&dev->pdev->dev, eq->depth << EQE_SHIFT, eq->qbuf, eq->qbuf_dma_addr); +} - dma_pool_free(dev->db_pool, eq->dbrec, eq->dbrec_dma); +int erdma_aeq_init(struct erdma_dev *dev) +{ + struct erdma_eq *eq = &dev->aeq; + int ret; + + ret = erdma_eq_common_init(dev, &dev->aeq, ERDMA_DEFAULT_EQ_DEPTH); + if (ret) + return ret; + + eq->db = dev->func_bar + ERDMA_REGS_AEQ_DB_REG; + + erdma_reg_write32(dev, ERDMA_REGS_AEQ_ADDR_H_REG, + upper_32_bits(eq->qbuf_dma_addr)); + erdma_reg_write32(dev, ERDMA_REGS_AEQ_ADDR_L_REG, + lower_32_bits(eq->qbuf_dma_addr)); + erdma_reg_write32(dev, ERDMA_REGS_AEQ_DEPTH_REG, eq->depth); + erdma_reg_write64(dev, ERDMA_AEQ_DB_HOST_ADDR_REG, eq->dbrec_dma); + + return 0; } void erdma_ceq_completion_handler(struct erdma_eq_cb *ceq_cb) @@ -234,32 +246,21 @@ static int erdma_ceq_init_one(struct erdma_dev *dev, u16 ceqn) struct erdma_eq *eq = &dev->ceqs[ceqn].eq; int ret; - eq->depth = ERDMA_DEFAULT_EQ_DEPTH; - eq->qbuf = dma_alloc_coherent(&dev->pdev->dev, eq->depth << EQE_SHIFT, - &eq->qbuf_dma_addr, GFP_KERNEL); - if (!eq->qbuf) - return -ENOMEM; - - spin_lock_init(&eq->lock); - atomic64_set(&eq->event_num, 0); - atomic64_set(&eq->notify_num, 0); + ret = erdma_eq_common_init(dev, eq, ERDMA_DEFAULT_EQ_DEPTH); + if (ret) + return ret; eq->db = dev->func_bar + ERDMA_REGS_CEQ_DB_BASE_REG + (ceqn + 1) * ERDMA_DB_SIZE; - - eq->dbrec = dma_pool_zalloc(dev->db_pool, GFP_KERNEL, &eq->dbrec_dma); - if (!eq->dbrec) { - dma_free_coherent(&dev->pdev->dev, eq->depth << EQE_SHIFT, - eq->qbuf, eq->qbuf_dma_addr); - return -ENOMEM; - } - - eq->ci = 0; dev->ceqs[ceqn].dev = dev; + dev->ceqs[ceqn].ready = true; /* CEQ indexed from 1, 0 rsvd for CMDQ-EQ. */ ret = create_eq_cmd(dev, ceqn + 1, eq); - dev->ceqs[ceqn].ready = ret ? false : true; + if (ret) { + erdma_eq_destroy(dev, eq); + dev->ceqs[ceqn].ready = false; + } return ret; } @@ -283,9 +284,7 @@ static void erdma_ceq_uninit_one(struct erdma_dev *dev, u16 ceqn) if (err) return; - dma_free_coherent(&dev->pdev->dev, eq->depth << EQE_SHIFT, eq->qbuf, - eq->qbuf_dma_addr); - dma_pool_free(dev->db_pool, eq->dbrec, eq->dbrec_dma); + erdma_eq_destroy(dev, eq); } int erdma_ceqs_init(struct erdma_dev *dev) diff --git a/drivers/infiniband/hw/erdma/erdma_main.c b/drivers/infiniband/hw/erdma/erdma_main.c index 9199058a0b29..d1cb488e7ad4 100644 --- a/drivers/infiniband/hw/erdma/erdma_main.c +++ b/drivers/infiniband/hw/erdma/erdma_main.c @@ -359,7 +359,7 @@ static int erdma_probe_dev(struct pci_dev *pdev) erdma_cmdq_destroy(dev); err_uninit_aeq: - erdma_aeq_destroy(dev); + erdma_eq_destroy(dev, &dev->aeq); err_uninit_comm_irq: erdma_comm_irq_uninit(dev); @@ -392,7 +392,7 @@ static void erdma_remove_dev(struct pci_dev *pdev) erdma_ceqs_uninit(dev); erdma_hw_reset(dev, false); erdma_cmdq_destroy(dev); - erdma_aeq_destroy(dev); + erdma_eq_destroy(dev, &dev->aeq); erdma_comm_irq_uninit(dev); pci_free_irq_vectors(dev->pdev); erdma_device_uninit(dev);

[for-next,v2,2/4] RDMA/erdma: Refactor the initialization and destruction of EQ

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