From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 37966A09FF; Tue, 29 Dec 2020 09:56:59 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 4CAB0CAC1; Tue, 29 Dec 2020 09:52:59 +0100 (CET) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by dpdk.org (Postfix) with ESMTP id 8BC2EC9C6 for ; Tue, 29 Dec 2020 09:52:35 +0100 (CET) Received: from Internal Mail-Server by MTLPINE1 (envelope-from michaelba@nvidia.com) with SMTP; 29 Dec 2020 10:52:33 +0200 Received: from nvidia.com (pegasus07.mtr.labs.mlnx [10.210.16.112]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 0BT8qWwn022593; Tue, 29 Dec 2020 10:52:33 +0200 From: Michael Baum To: dev@dpdk.org Cc: Matan Azrad , Raslan Darawsheh , Viacheslav Ovsiienko Date: Tue, 29 Dec 2020 08:52:24 +0000 Message-Id: <1609231944-29274-18-git-send-email-michaelba@nvidia.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1609231944-29274-1-git-send-email-michaelba@nvidia.com> References: <1608205475-20067-2-git-send-email-michaelba@nvidia.com> <1609231944-29274-1-git-send-email-michaelba@nvidia.com> Subject: [dpdk-dev] [PATCH v2 17/17] common/mlx5: remove doorbell allocation API X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The mlx5_devx_dbr_page structure was used to allocate and release the umem of the doorbells. Since doorbell and buffer have used same umem, this structure is useless. Signed-off-by: Michael Baum Acked-by: Matan Azrad --- drivers/common/mlx5/mlx5_common.c | 122 -------------------------------------- drivers/common/mlx5/mlx5_common.h | 23 ------- 2 files changed, 145 deletions(-) diff --git a/drivers/common/mlx5/mlx5_common.c b/drivers/common/mlx5/mlx5_common.c index 0445132..c26a2cf 100644 --- a/drivers/common/mlx5/mlx5_common.c +++ b/drivers/common/mlx5/mlx5_common.c @@ -8,12 +8,10 @@ #include #include -#include #include "mlx5_common.h" #include "mlx5_common_os.h" #include "mlx5_common_utils.h" -#include "mlx5_malloc.h" #include "mlx5_common_pci.h" int mlx5_common_logtype; @@ -126,126 +124,6 @@ static inline void mlx5_cpu_id(unsigned int level, } /** - * Allocate page of door-bells and register it using DevX API. - * - * @param [in] ctx - * Pointer to the device context. - * - * @return - * Pointer to new page on success, NULL otherwise. - */ -static struct mlx5_devx_dbr_page * -mlx5_alloc_dbr_page(void *ctx) -{ - struct mlx5_devx_dbr_page *page; - - /* Allocate space for door-bell page and management data. */ - page = mlx5_malloc(MLX5_MEM_RTE | MLX5_MEM_ZERO, - sizeof(struct mlx5_devx_dbr_page), - RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY); - if (!page) { - DRV_LOG(ERR, "cannot allocate dbr page"); - return NULL; - } - /* Register allocated memory. */ - page->umem = mlx5_glue->devx_umem_reg(ctx, page->dbrs, - MLX5_DBR_PAGE_SIZE, 0); - if (!page->umem) { - DRV_LOG(ERR, "cannot umem reg dbr page"); - mlx5_free(page); - return NULL; - } - return page; -} - -/** - * Find the next available door-bell, allocate new page if needed. - * - * @param [in] ctx - * Pointer to device context. - * @param [in] head - * Pointer to the head of dbr pages list. - * @param [out] dbr_page - * Door-bell page containing the page data. - * - * @return - * Door-bell address offset on success, a negative error value otherwise. - */ -int64_t -mlx5_get_dbr(void *ctx, struct mlx5_dbr_page_list *head, - struct mlx5_devx_dbr_page **dbr_page) -{ - struct mlx5_devx_dbr_page *page = NULL; - uint32_t i, j; - - LIST_FOREACH(page, head, next) - if (page->dbr_count < MLX5_DBR_PER_PAGE) - break; - if (!page) { /* No page with free door-bell exists. */ - page = mlx5_alloc_dbr_page(ctx); - if (!page) /* Failed to allocate new page. */ - return (-1); - LIST_INSERT_HEAD(head, page, next); - } - /* Loop to find bitmap part with clear bit. */ - for (i = 0; - i < MLX5_DBR_BITMAP_SIZE && page->dbr_bitmap[i] == UINT64_MAX; - i++) - ; /* Empty. */ - /* Find the first clear bit. */ - MLX5_ASSERT(i < MLX5_DBR_BITMAP_SIZE); - j = rte_bsf64(~page->dbr_bitmap[i]); - page->dbr_bitmap[i] |= (UINT64_C(1) << j); - page->dbr_count++; - *dbr_page = page; - return (i * CHAR_BIT * sizeof(uint64_t) + j) * MLX5_DBR_SIZE; -} - -/** - * Release a door-bell record. - * - * @param [in] head - * Pointer to the head of dbr pages list. - * @param [in] umem_id - * UMEM ID of page containing the door-bell record to release. - * @param [in] offset - * Offset of door-bell record in page. - * - * @return - * 0 on success, a negative error value otherwise. - */ -int32_t -mlx5_release_dbr(struct mlx5_dbr_page_list *head, uint32_t umem_id, - uint64_t offset) -{ - struct mlx5_devx_dbr_page *page = NULL; - int ret = 0; - - LIST_FOREACH(page, head, next) - /* Find the page this address belongs to. */ - if (mlx5_os_get_umem_id(page->umem) == umem_id) - break; - if (!page) - return -EINVAL; - page->dbr_count--; - if (!page->dbr_count) { - /* Page not used, free it and remove from list. */ - LIST_REMOVE(page, next); - if (page->umem) - ret = -mlx5_glue->devx_umem_dereg(page->umem); - mlx5_free(page); - } else { - /* Mark in bitmap that this door-bell is not in use. */ - offset /= MLX5_DBR_SIZE; - int i = offset / 64; - int j = offset % 64; - - page->dbr_bitmap[i] &= ~(UINT64_C(1) << j); - } - return ret; -} - -/** * Allocate the User Access Region with DevX on specified device. * * @param [in] ctx diff --git a/drivers/common/mlx5/mlx5_common.h b/drivers/common/mlx5/mlx5_common.h index a484b74..e35188d 100644 --- a/drivers/common/mlx5/mlx5_common.h +++ b/drivers/common/mlx5/mlx5_common.h @@ -220,21 +220,6 @@ enum mlx5_class { }; #define MLX5_DBR_SIZE RTE_CACHE_LINE_SIZE -#define MLX5_DBR_PER_PAGE 64 -/* Must be >= CHAR_BIT * sizeof(uint64_t) */ -#define MLX5_DBR_PAGE_SIZE (MLX5_DBR_PER_PAGE * MLX5_DBR_SIZE) -/* Page size must be >= 512. */ -#define MLX5_DBR_BITMAP_SIZE (MLX5_DBR_PER_PAGE / (CHAR_BIT * sizeof(uint64_t))) - -struct mlx5_devx_dbr_page { - /* Door-bell records, must be first member in structure. */ - uint8_t dbrs[MLX5_DBR_PAGE_SIZE]; - LIST_ENTRY(mlx5_devx_dbr_page) next; /* Pointer to the next element. */ - void *umem; - uint32_t dbr_count; /* Number of door-bell records in use. */ - /* 1 bit marks matching door-bell is in use. */ - uint64_t dbr_bitmap[MLX5_DBR_BITMAP_SIZE]; -}; /* devX creation object */ struct mlx5_devx_obj { @@ -249,19 +234,11 @@ struct mlx5_klm { uint64_t address; }; -LIST_HEAD(mlx5_dbr_page_list, mlx5_devx_dbr_page); - __rte_internal void mlx5_translate_port_name(const char *port_name_in, struct mlx5_switch_info *port_info_out); void mlx5_glue_constructor(void); __rte_internal -int64_t mlx5_get_dbr(void *ctx, struct mlx5_dbr_page_list *head, - struct mlx5_devx_dbr_page **dbr_page); -__rte_internal -int32_t mlx5_release_dbr(struct mlx5_dbr_page_list *head, uint32_t umem_id, - uint64_t offset); -__rte_internal void *mlx5_devx_alloc_uar(void *ctx, int mapping); extern uint8_t haswell_broadwell_cpu; -- 1.8.3.1