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eswitch.h
(5.81 KB)
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flow_table.h
(2.77 KB)
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fs_core.h
(8.86 KB)
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mlx5_alloc.c
(6.79 KB)
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mlx5_cmd.c
(44.91 KB)
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mlx5_core.h
(6.03 KB)
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mlx5_cq.c
(7.49 KB)
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mlx5_diagnostics.c
(11.69 KB)
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mlx5_eq.c
(21.9 KB)
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mlx5_eswitch.c
(36.64 KB)
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mlx5_fs_cmd.c
(8.49 KB)
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mlx5_fs_tree.c
(64.46 KB)
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mlx5_fw.c
(16.83 KB)
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mlx5_fwdump.c
(12.73 KB)
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mlx5_health.c
(20.71 KB)
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mlx5_mad.c
(2.33 KB)
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mlx5_main.c
(54.6 KB)
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mlx5_mcg.c
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mlx5_mpfs.c
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mlx5_mr.c
(7 KB)
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mlx5_pagealloc.c
(14.68 KB)
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mlx5_pd.c
(2.19 KB)
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mlx5_port.c
(38.74 KB)
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mlx5_qp.c
(13.61 KB)
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mlx5_rl.c
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mlx5_srq.c
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mlx5_tls.c
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mlx5_transobj.c
(10.86 KB)
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mlx5_uar.c
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mlx5_vport.c
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mlx5_vsc.c
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mlx5_wq.c
(4.96 KB)
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transobj.h
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wq.h
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Editing: mlx5_alloc.c
/*- * Copyright (c) 2013-2017, Mellanox Technologies, Ltd. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #include <linux/errno.h> #include <linux/slab.h> #include <linux/mm.h> #include <linux/dma-mapping.h> #include <linux/vmalloc.h> #include <dev/mlx5/driver.h> #include "mlx5_core.h" /* Handling for queue buffers -- we allocate a bunch of memory and * register it in a memory region at HCA virtual address 0. If the * requested size is > max_direct, we split the allocation into * multiple pages, so we don't require too much contiguous memory. */ static void mlx5_buf_load_mem_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) { struct mlx5_buf *buf; uint8_t owned; int x; buf = (struct mlx5_buf *)arg; owned = MLX5_DMA_OWNED(buf->dev); if (!owned) MLX5_DMA_LOCK(buf->dev); if (error == 0) { for (x = 0; x != nseg; x++) { buf->page_list[x] = segs[x].ds_addr; KASSERT(segs[x].ds_len == PAGE_SIZE, ("Invalid segment size")); } buf->load_done = MLX5_LOAD_ST_SUCCESS; } else { buf->load_done = MLX5_LOAD_ST_FAILURE; } MLX5_DMA_DONE(buf->dev); if (!owned) MLX5_DMA_UNLOCK(buf->dev); } int mlx5_buf_alloc(struct mlx5_core_dev *dev, int size, int max_direct, struct mlx5_buf *buf) { int err; buf->npages = howmany(size, PAGE_SIZE); buf->page_shift = PAGE_SHIFT; buf->load_done = MLX5_LOAD_ST_NONE; buf->dev = dev; buf->page_list = kcalloc(buf->npages, sizeof(*buf->page_list), GFP_KERNEL); err = -bus_dma_tag_create( bus_get_dma_tag(dev->pdev->dev.bsddev), PAGE_SIZE, /* alignment */ 0, /* no boundary */ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ PAGE_SIZE * buf->npages, /* maxsize */ buf->npages, /* nsegments */ PAGE_SIZE, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockfuncarg */ &buf->dma_tag); if (err != 0) goto err_dma_tag; /* allocate memory */ err = -bus_dmamem_alloc(buf->dma_tag, &buf->direct.buf, BUS_DMA_WAITOK | BUS_DMA_COHERENT, &buf->dma_map); if (err != 0) goto err_dma_alloc; /* load memory into DMA */ MLX5_DMA_LOCK(dev); err = bus_dmamap_load( buf->dma_tag, buf->dma_map, buf->direct.buf, PAGE_SIZE * buf->npages, &mlx5_buf_load_mem_cb, buf, BUS_DMA_WAITOK | BUS_DMA_COHERENT); while (buf->load_done == MLX5_LOAD_ST_NONE) MLX5_DMA_WAIT(dev); MLX5_DMA_UNLOCK(dev); /* check for error */ if (buf->load_done != MLX5_LOAD_ST_SUCCESS) { err = -ENOMEM; goto err_dma_load; } /* clean memory */ memset(buf->direct.buf, 0, PAGE_SIZE * buf->npages); /* flush memory to RAM */ bus_dmamap_sync(buf->dev->cmd.dma_tag, buf->dma_map, BUS_DMASYNC_PREWRITE); return (0); err_dma_load: bus_dmamem_free(buf->dma_tag, buf->direct.buf, buf->dma_map); err_dma_alloc: bus_dma_tag_destroy(buf->dma_tag); err_dma_tag: kfree(buf->page_list); return (err); } void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_buf *buf) { bus_dmamap_unload(buf->dma_tag, buf->dma_map); bus_dmamem_free(buf->dma_tag, buf->direct.buf, buf->dma_map); bus_dma_tag_destroy(buf->dma_tag); kfree(buf->page_list); } EXPORT_SYMBOL_GPL(mlx5_buf_free); static struct mlx5_db_pgdir *mlx5_alloc_db_pgdir(struct mlx5_core_dev *dev, int node) { struct mlx5_db_pgdir *pgdir; pgdir = kzalloc(sizeof(*pgdir), GFP_KERNEL); bitmap_fill(pgdir->bitmap, MLX5_DB_PER_PAGE); pgdir->fw_page = mlx5_fwp_alloc(dev, GFP_KERNEL, 1); if (pgdir->fw_page != NULL) { pgdir->db_page = pgdir->fw_page->virt_addr; pgdir->db_dma = pgdir->fw_page->dma_addr; /* clean allocated memory */ memset(pgdir->db_page, 0, MLX5_ADAPTER_PAGE_SIZE); /* flush memory to RAM */ mlx5_fwp_flush(pgdir->fw_page); } if (!pgdir->db_page) { kfree(pgdir); return NULL; } return pgdir; } static int mlx5_alloc_db_from_pgdir(struct mlx5_db_pgdir *pgdir, struct mlx5_db *db) { int offset; int i; i = find_first_bit(pgdir->bitmap, MLX5_DB_PER_PAGE); if (i >= MLX5_DB_PER_PAGE) return -ENOMEM; __clear_bit(i, pgdir->bitmap); db->u.pgdir = pgdir; db->index = i; offset = db->index * L1_CACHE_BYTES; db->db = pgdir->db_page + offset / sizeof(*pgdir->db_page); db->dma = pgdir->db_dma + offset; db->db[0] = 0; db->db[1] = 0; return 0; } int mlx5_db_alloc_node(struct mlx5_core_dev *dev, struct mlx5_db *db, int node) { struct mlx5_db_pgdir *pgdir; int ret = 0; mutex_lock(&dev->priv.pgdir_mutex); list_for_each_entry(pgdir, &dev->priv.pgdir_list, list) if (!mlx5_alloc_db_from_pgdir(pgdir, db)) goto out; pgdir = mlx5_alloc_db_pgdir(dev, node); if (!pgdir) { ret = -ENOMEM; goto out; } list_add(&pgdir->list, &dev->priv.pgdir_list); /* This should never fail -- we just allocated an empty page: */ WARN_ON(mlx5_alloc_db_from_pgdir(pgdir, db)); out: mutex_unlock(&dev->priv.pgdir_mutex); return ret; } EXPORT_SYMBOL_GPL(mlx5_db_alloc_node); int mlx5_db_alloc(struct mlx5_core_dev *dev, struct mlx5_db *db) { return mlx5_db_alloc_node(dev, db, dev->priv.numa_node); } EXPORT_SYMBOL_GPL(mlx5_db_alloc); void mlx5_db_free(struct mlx5_core_dev *dev, struct mlx5_db *db) { mutex_lock(&dev->priv.pgdir_mutex); __set_bit(db->index, db->u.pgdir->bitmap); if (bitmap_full(db->u.pgdir->bitmap, MLX5_DB_PER_PAGE)) { mlx5_fwp_free(db->u.pgdir->fw_page); list_del(&db->u.pgdir->list); kfree(db->u.pgdir); } mutex_unlock(&dev->priv.pgdir_mutex); } EXPORT_SYMBOL_GPL(mlx5_db_free); void mlx5_fill_page_array(struct mlx5_buf *buf, __be64 *pas) { int i; for (i = 0; i != buf->npages; i++) pas[i] = cpu_to_be64(buf->page_list[i]); } EXPORT_SYMBOL_GPL(mlx5_fill_page_array);
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