[v5,11/12] net: mana: Define data structures for protection domain and memory registration

Message ID	1661906071-29508-12-git-send-email-longli@linuxonhyperv.com (mailing list archive)
State	Superseded
Headers	show Return-Path: <linux-rdma-owner@kernel.org> From: longli@linuxonhyperv.com To: "K. Y. Srinivasan" <kys@microsoft.com>, Haiyang Zhang <haiyangz@microsoft.com>, Stephen Hemminger <sthemmin@microsoft.com>, Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>, "David S. Miller" <davem@davemloft.net>, Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>, Jason Gunthorpe <jgg@ziepe.ca>, Leon Romanovsky <leon@kernel.org>, edumazet@google.com, shiraz.saleem@intel.com, Ajay Sharma <sharmaajay@microsoft.com> Cc: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Long Li <longli@microsoft.com> Subject: [Patch v5 11/12] net: mana: Define data structures for protection domain and memory registration Date: Tue, 30 Aug 2022 17:34:30 -0700 Message-Id: <1661906071-29508-12-git-send-email-longli@linuxonhyperv.com> In-Reply-To: <1661906071-29508-1-git-send-email-longli@linuxonhyperv.com> References: <1661906071-29508-1-git-send-email-longli@linuxonhyperv.com> Reply-To: longli@microsoft.com Precedence: bulk
Series	Introduce Microsoft Azure Network Adapter (MANA) RDMA driver \| expand [v5,00/12] Introduce Microsoft Azure Network Adapter (MANA) RDMA driver [v5,01/12] net: mana: Add support for auxiliary device [v5,02/12] net: mana: Record the physical address for doorbell page region [v5,03/12] net: mana: Handle vport sharing between devices [v5,04/12] net: mana: Add functions for allocating doorbell page from GDMA [v5,05/12] net: mana: Set the DMA device max segment size [v5,06/12] net: mana: Export Work Queue functions for use by RDMA driver [v5,07/12] net: mana: Record port number in netdev [v5,08/12] net: mana: Move header files to a common location [v5,09/12] net: mana: Define max values for SGL entries [v5,10/12] net: mana: Define and process GDMA response code GDMA_STATUS_MORE_ENTRIES [v5,11/12] net: mana: Define data structures for protection domain and memory registration [v5,12/12] RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter

diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c index 930e7f4a1dad..b65218cc19ab 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c @@ -227,7 +227,7 @@ static int mana_gd_create_hw_eq(struct gdma_context *gc, req.type = queue->type; req.pdid = queue->gdma_dev->pdid; req.doolbell_id = queue->gdma_dev->doorbell; - req.gdma_region = queue->mem_info.gdma_region; + req.gdma_region = queue->mem_info.dma_region_handle; req.queue_size = queue->queue_size; req.log2_throttle_limit = queue->eq.log2_throttle_limit; req.eq_pci_msix_index = queue->eq.msix_index; @@ -241,7 +241,7 @@ static int mana_gd_create_hw_eq(struct gdma_context *gc, queue->id = resp.queue_index; queue->eq.disable_needed = true; - queue->mem_info.gdma_region = GDMA_INVALID_DMA_REGION; + queue->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; return 0; } @@ -695,24 +695,30 @@ int mana_gd_create_hwc_queue(struct gdma_dev *gd, return err; } -static void mana_gd_destroy_dma_region(struct gdma_context *gc, u64 gdma_region) +int mana_gd_destroy_dma_region(struct gdma_context *gc, + gdma_obj_handle_t dma_region_handle) { struct gdma_destroy_dma_region_req req = {}; struct gdma_general_resp resp = {}; int err; - if (gdma_region == GDMA_INVALID_DMA_REGION) - return; + if (dma_region_handle == GDMA_INVALID_DMA_REGION) + return 0; mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_DMA_REGION, sizeof(req), sizeof(resp)); - req.gdma_region = gdma_region; + req.dma_region_handle = dma_region_handle; err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp); - if (err || resp.hdr.status) + if (err || resp.hdr.status) { dev_err(gc->dev, "Failed to destroy DMA region: %d, 0x%x\n", err, resp.hdr.status); + return -EPROTO; + } + + return 0; } +EXPORT_SYMBOL_NS(mana_gd_destroy_dma_region, NET_MANA); static int mana_gd_create_dma_region(struct gdma_dev *gd, struct gdma_mem_info *gmi) @@ -757,14 +763,15 @@ static int mana_gd_create_dma_region(struct gdma_dev *gd, if (err) goto out; - if (resp.hdr.status || resp.gdma_region == GDMA_INVALID_DMA_REGION) { + if (resp.hdr.status || + resp.dma_region_handle == GDMA_INVALID_DMA_REGION) { dev_err(gc->dev, "Failed to create DMA region: 0x%x\n", resp.hdr.status); err = -EPROTO; goto out; } - gmi->gdma_region = resp.gdma_region; + gmi->dma_region_handle = resp.dma_region_handle; out: kfree(req); return err; @@ -887,7 +894,7 @@ void mana_gd_destroy_queue(struct gdma_context *gc, struct gdma_queue *queue) return; } - mana_gd_destroy_dma_region(gc, gmi->gdma_region); + mana_gd_destroy_dma_region(gc, gmi->dma_region_handle); mana_gd_free_memory(gmi); kfree(queue); } diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c index 2ca2a63afe6c..3b17ea45ad26 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_en.c +++ b/drivers/net/ethernet/microsoft/mana/mana_en.c @@ -1399,10 +1399,10 @@ static int mana_create_txq(struct mana_port_context *apc, memset(&wq_spec, 0, sizeof(wq_spec)); memset(&cq_spec, 0, sizeof(cq_spec)); - wq_spec.gdma_region = txq->gdma_sq->mem_info.gdma_region; + wq_spec.gdma_region = txq->gdma_sq->mem_info.dma_region_handle; wq_spec.queue_size = txq->gdma_sq->queue_size; - cq_spec.gdma_region = cq->gdma_cq->mem_info.gdma_region; + cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle; cq_spec.queue_size = cq->gdma_cq->queue_size; cq_spec.modr_ctx_id = 0; cq_spec.attached_eq = cq->gdma_cq->cq.parent->id; @@ -1417,8 +1417,10 @@ static int mana_create_txq(struct mana_port_context *apc, txq->gdma_sq->id = wq_spec.queue_index; cq->gdma_cq->id = cq_spec.queue_index; - txq->gdma_sq->mem_info.gdma_region = GDMA_INVALID_DMA_REGION; - cq->gdma_cq->mem_info.gdma_region = GDMA_INVALID_DMA_REGION; + txq->gdma_sq->mem_info.dma_region_handle = + GDMA_INVALID_DMA_REGION; + cq->gdma_cq->mem_info.dma_region_handle = + GDMA_INVALID_DMA_REGION; txq->gdma_txq_id = txq->gdma_sq->id; @@ -1629,10 +1631,10 @@ static struct mana_rxq *mana_create_rxq(struct mana_port_context *apc, memset(&wq_spec, 0, sizeof(wq_spec)); memset(&cq_spec, 0, sizeof(cq_spec)); - wq_spec.gdma_region = rxq->gdma_rq->mem_info.gdma_region; + wq_spec.gdma_region = rxq->gdma_rq->mem_info.dma_region_handle; wq_spec.queue_size = rxq->gdma_rq->queue_size; - cq_spec.gdma_region = cq->gdma_cq->mem_info.gdma_region; + cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle; cq_spec.queue_size = cq->gdma_cq->queue_size; cq_spec.modr_ctx_id = 0; cq_spec.attached_eq = cq->gdma_cq->cq.parent->id; @@ -1645,8 +1647,8 @@ static struct mana_rxq *mana_create_rxq(struct mana_port_context *apc, rxq->gdma_rq->id = wq_spec.queue_index; cq->gdma_cq->id = cq_spec.queue_index; - rxq->gdma_rq->mem_info.gdma_region = GDMA_INVALID_DMA_REGION; - cq->gdma_cq->mem_info.gdma_region = GDMA_INVALID_DMA_REGION; + rxq->gdma_rq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; + cq->gdma_cq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION; rxq->gdma_id = rxq->gdma_rq->id; cq->gdma_id = cq->gdma_cq->id; diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h index 2442e72628d9..7828f0e5ae9d 100644 --- a/include/net/mana/gdma.h +++ b/include/net/mana/gdma.h @@ -29,6 +29,10 @@ enum gdma_request_type { GDMA_CREATE_DMA_REGION = 25, GDMA_DMA_REGION_ADD_PAGES = 26, GDMA_DESTROY_DMA_REGION = 27, + GDMA_CREATE_PD = 29, + GDMA_DESTROY_PD = 30, + GDMA_CREATE_MR = 31, + GDMA_DESTROY_MR = 32, }; #define GDMA_RESOURCE_DOORBELL_PAGE 27 @@ -61,6 +65,8 @@ enum { GDMA_DEVICE_MANA = 2, }; +typedef u64 gdma_obj_handle_t; + struct gdma_resource { /* Protect the bitmap */ spinlock_t lock; @@ -194,7 +200,7 @@ struct gdma_mem_info { u64 length; /* Allocated by the PF driver */ - u64 gdma_region; + gdma_obj_handle_t dma_region_handle; }; #define REGISTER_ATB_MST_MKEY_LOWER_SIZE 8 @@ -608,7 +614,7 @@ struct gdma_create_queue_req { u32 reserved1; u32 pdid; u32 doolbell_id; - u64 gdma_region; + gdma_obj_handle_t gdma_region; u32 reserved2; u32 queue_size; u32 log2_throttle_limit; @@ -635,6 +641,28 @@ struct gdma_disable_queue_req { u32 alloc_res_id_on_creation; }; /* HW DATA */ +enum atb_page_size { + ATB_PAGE_SIZE_4K, + ATB_PAGE_SIZE_8K, + ATB_PAGE_SIZE_16K, + ATB_PAGE_SIZE_32K, + ATB_PAGE_SIZE_64K, + ATB_PAGE_SIZE_128K, + ATB_PAGE_SIZE_256K, + ATB_PAGE_SIZE_512K, + ATB_PAGE_SIZE_1M, + ATB_PAGE_SIZE_2M, + ATB_PAGE_SIZE_MAX, +}; + +enum gdma_mr_access_flags { + GDMA_ACCESS_FLAG_LOCAL_READ = BIT_ULL(0), + GDMA_ACCESS_FLAG_LOCAL_WRITE = BIT_ULL(1), + GDMA_ACCESS_FLAG_REMOTE_READ = BIT_ULL(2), + GDMA_ACCESS_FLAG_REMOTE_WRITE = BIT_ULL(3), + GDMA_ACCESS_FLAG_REMOTE_ATOMIC = BIT_ULL(4), +}; + /* GDMA_CREATE_DMA_REGION */ struct gdma_create_dma_region_req { struct gdma_req_hdr hdr; @@ -661,14 +689,14 @@ struct gdma_create_dma_region_req { struct gdma_create_dma_region_resp { struct gdma_resp_hdr hdr; - u64 gdma_region; + gdma_obj_handle_t dma_region_handle; }; /* HW DATA */ /* GDMA_DMA_REGION_ADD_PAGES */ struct gdma_dma_region_add_pages_req { struct gdma_req_hdr hdr; - u64 gdma_region; + gdma_obj_handle_t dma_region_handle; u32 page_addr_list_len; u32 reserved3; @@ -680,9 +708,88 @@ struct gdma_dma_region_add_pages_req { struct gdma_destroy_dma_region_req { struct gdma_req_hdr hdr; - u64 gdma_region; + gdma_obj_handle_t dma_region_handle; }; /* HW DATA */ +enum gdma_pd_flags { + GDMA_PD_FLAG_INVALID = 0, +}; + +struct gdma_create_pd_req { + struct gdma_req_hdr hdr; + enum gdma_pd_flags flags; + u32 reserved; +};/* HW DATA */ + +struct gdma_create_pd_resp { + struct gdma_resp_hdr hdr; + gdma_obj_handle_t pd_handle; + u32 pd_id; + u32 reserved; +};/* HW DATA */ + +struct gdma_destroy_pd_req { + struct gdma_req_hdr hdr; + gdma_obj_handle_t pd_handle; +};/* HW DATA */ + +struct gdma_destory_pd_resp { + struct gdma_resp_hdr hdr; +};/* HW DATA */ + +enum gdma_mr_type { + /* Guest Virtual Address - MRs of this type allow access + * to memory mapped by PTEs associated with this MR using a virtual + * address that is set up in the MST + */ + GDMA_MR_TYPE_GVA = 2, +}; + +struct gdma_create_mr_params { + gdma_obj_handle_t pd_handle; + enum gdma_mr_type mr_type; + union { + struct { + gdma_obj_handle_t dma_region_handle; + u64 virtual_address; + enum gdma_mr_access_flags access_flags; + } gva; + }; +}; + +struct gdma_create_mr_request { + struct gdma_req_hdr hdr; + gdma_obj_handle_t pd_handle; + enum gdma_mr_type mr_type; + u32 reserved_1; + + union { + struct { + gdma_obj_handle_t dma_region_handle; + u64 virtual_address; + enum gdma_mr_access_flags access_flags; + } gva; + + }; + u32 reserved_2; +};/* HW DATA */ + +struct gdma_create_mr_response { + struct gdma_resp_hdr hdr; + gdma_obj_handle_t mr_handle; + u32 lkey; + u32 rkey; +};/* HW DATA */ + +struct gdma_destroy_mr_request { + struct gdma_req_hdr hdr; + gdma_obj_handle_t mr_handle; +};/* HW DATA */ + +struct gdma_destroy_mr_response { + struct gdma_resp_hdr hdr; +};/* HW DATA */ + int mana_gd_verify_vf_version(struct pci_dev *pdev); int mana_gd_register_device(struct gdma_dev *gd); @@ -714,4 +821,7 @@ int mana_gd_allocate_doorbell_page(struct gdma_context *gc, int *doorbell_page); int mana_gd_destroy_doorbell_page(struct gdma_context *gc, int doorbell_page); +int mana_gd_destroy_dma_region(struct gdma_context *gc, + gdma_obj_handle_t dma_region_handle); + #endif /* _GDMA_H */

[v5,11/12] net: mana: Define data structures for protection domain and memory registration

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