mlx4: Move the Mellanox driver

Moves the Mellanox driver into drivers/net/ethernet/mellanox/ and
make the necessary Kconfig and Makefile changes.

CC: Roland Dreier <roland@kernel.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 430 deletions

diff --git a/drivers/net/mlx4/icm.c b/drivers/net/mlx4/icm.c
deleted file mode 100644
index 02393fdf44c1..000000000000
--- a/drivers/net/mlx4/icm.c
+++ /dev/null
@@ -1,430 +0,0 @@
-/*
- * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
- * Copyright (c) 2006, 2007 Cisco Systems, Inc.  All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses.  You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- *     Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *      - Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *
- *      - 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.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-
-#include <linux/mlx4/cmd.h>
-
-#include "mlx4.h"
-#include "icm.h"
-#include "fw.h"
-
-/*
- * We allocate in as big chunks as we can, up to a maximum of 256 KB
- * per chunk.
- */
-enum {
-	MLX4_ICM_ALLOC_SIZE	= 1 << 18,
-	MLX4_TABLE_CHUNK_SIZE	= 1 << 18
-};
-
-static void mlx4_free_icm_pages(struct mlx4_dev *dev, struct mlx4_icm_chunk *chunk)
-{
-	int i;
-
-	if (chunk->nsg > 0)
-		pci_unmap_sg(dev->pdev, chunk->mem, chunk->npages,
-			     PCI_DMA_BIDIRECTIONAL);
-
-	for (i = 0; i < chunk->npages; ++i)
-		__free_pages(sg_page(&chunk->mem[i]),
-			     get_order(chunk->mem[i].length));
-}
-
-static void mlx4_free_icm_coherent(struct mlx4_dev *dev, struct mlx4_icm_chunk *chunk)
-{
-	int i;
-
-	for (i = 0; i < chunk->npages; ++i)
-		dma_free_coherent(&dev->pdev->dev, chunk->mem[i].length,
-				  lowmem_page_address(sg_page(&chunk->mem[i])),
-				  sg_dma_address(&chunk->mem[i]));
-}
-
-void mlx4_free_icm(struct mlx4_dev *dev, struct mlx4_icm *icm, int coherent)
-{
-	struct mlx4_icm_chunk *chunk, *tmp;
-
-	if (!icm)
-		return;
-
-	list_for_each_entry_safe(chunk, tmp, &icm->chunk_list, list) {
-		if (coherent)
-			mlx4_free_icm_coherent(dev, chunk);
-		else
-			mlx4_free_icm_pages(dev, chunk);
-
-		kfree(chunk);
-	}
-
-	kfree(icm);
-}
-
-static int mlx4_alloc_icm_pages(struct scatterlist *mem, int order, gfp_t gfp_mask)
-{
-	struct page *page;
-
-	page = alloc_pages(gfp_mask, order);
-	if (!page)
-		return -ENOMEM;
-
-	sg_set_page(mem, page, PAGE_SIZE << order, 0);
-	return 0;
-}
-
-static int mlx4_alloc_icm_coherent(struct device *dev, struct scatterlist *mem,
-				    int order, gfp_t gfp_mask)
-{
-	void *buf = dma_alloc_coherent(dev, PAGE_SIZE << order,
-				       &sg_dma_address(mem), gfp_mask);
-	if (!buf)
-		return -ENOMEM;
-
-	sg_set_buf(mem, buf, PAGE_SIZE << order);
-	BUG_ON(mem->offset);
-	sg_dma_len(mem) = PAGE_SIZE << order;
-	return 0;
-}
-
-struct mlx4_icm *mlx4_alloc_icm(struct mlx4_dev *dev, int npages,
-				gfp_t gfp_mask, int coherent)
-{
-	struct mlx4_icm *icm;
-	struct mlx4_icm_chunk *chunk = NULL;
-	int cur_order;
-	int ret;
-
-	/* We use sg_set_buf for coherent allocs, which assumes low memory */
-	BUG_ON(coherent && (gfp_mask & __GFP_HIGHMEM));
-
-	icm = kmalloc(sizeof *icm, gfp_mask & ~(__GFP_HIGHMEM | __GFP_NOWARN));
-	if (!icm)
-		return NULL;
-
-	icm->refcount = 0;
-	INIT_LIST_HEAD(&icm->chunk_list);
-
-	cur_order = get_order(MLX4_ICM_ALLOC_SIZE);
-
-	while (npages > 0) {
-		if (!chunk) {
-			chunk = kmalloc(sizeof *chunk,
-					gfp_mask & ~(__GFP_HIGHMEM | __GFP_NOWARN));
-			if (!chunk)
-				goto fail;
-
-			sg_init_table(chunk->mem, MLX4_ICM_CHUNK_LEN);
-			chunk->npages = 0;
-			chunk->nsg    = 0;
-			list_add_tail(&chunk->list, &icm->chunk_list);
-		}
-
-		while (1 << cur_order > npages)
-			--cur_order;
-
-		if (coherent)
-			ret = mlx4_alloc_icm_coherent(&dev->pdev->dev,
-						      &chunk->mem[chunk->npages],
-						      cur_order, gfp_mask);
-		else
-			ret = mlx4_alloc_icm_pages(&chunk->mem[chunk->npages],
-						   cur_order, gfp_mask);
-
-		if (ret) {
-			if (--cur_order < 0)
-				goto fail;
-			else
-				continue;
-		}
-
-		++chunk->npages;
-
-		if (coherent)
-			++chunk->nsg;
-		else if (chunk->npages == MLX4_ICM_CHUNK_LEN) {
-			chunk->nsg = pci_map_sg(dev->pdev, chunk->mem,
-						chunk->npages,
-						PCI_DMA_BIDIRECTIONAL);
-
-			if (chunk->nsg <= 0)
-				goto fail;
-		}
-
-		if (chunk->npages == MLX4_ICM_CHUNK_LEN)
-			chunk = NULL;
-
-		npages -= 1 << cur_order;
-	}
-
-	if (!coherent && chunk) {
-		chunk->nsg = pci_map_sg(dev->pdev, chunk->mem,
-					chunk->npages,
-					PCI_DMA_BIDIRECTIONAL);
-
-		if (chunk->nsg <= 0)
-			goto fail;
-	}
-
-	return icm;
-
-fail:
-	mlx4_free_icm(dev, icm, coherent);
-	return NULL;
-}
-
-static int mlx4_MAP_ICM(struct mlx4_dev *dev, struct mlx4_icm *icm, u64 virt)
-{
-	return mlx4_map_cmd(dev, MLX4_CMD_MAP_ICM, icm, virt);
-}
-
-static int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count)
-{
-	return mlx4_cmd(dev, virt, page_count, 0, MLX4_CMD_UNMAP_ICM,
-			MLX4_CMD_TIME_CLASS_B);
-}
-
-int mlx4_MAP_ICM_AUX(struct mlx4_dev *dev, struct mlx4_icm *icm)
-{
-	return mlx4_map_cmd(dev, MLX4_CMD_MAP_ICM_AUX, icm, -1);
-}
-
-int mlx4_UNMAP_ICM_AUX(struct mlx4_dev *dev)
-{
-	return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_UNMAP_ICM_AUX, MLX4_CMD_TIME_CLASS_B);
-}
-
-int mlx4_table_get(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj)
-{
-	int i = (obj & (table->num_obj - 1)) / (MLX4_TABLE_CHUNK_SIZE / table->obj_size);
-	int ret = 0;
-
-	mutex_lock(&table->mutex);
-
-	if (table->icm[i]) {
-		++table->icm[i]->refcount;
-		goto out;
-	}
-
-	table->icm[i] = mlx4_alloc_icm(dev, MLX4_TABLE_CHUNK_SIZE >> PAGE_SHIFT,
-				       (table->lowmem ? GFP_KERNEL : GFP_HIGHUSER) |
-				       __GFP_NOWARN, table->coherent);
-	if (!table->icm[i]) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	if (mlx4_MAP_ICM(dev, table->icm[i], table->virt +
-			 (u64) i * MLX4_TABLE_CHUNK_SIZE)) {
-		mlx4_free_icm(dev, table->icm[i], table->coherent);
-		table->icm[i] = NULL;
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	++table->icm[i]->refcount;
-
-out:
-	mutex_unlock(&table->mutex);
-	return ret;
-}
-
-void mlx4_table_put(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj)
-{
-	int i;
-
-	i = (obj & (table->num_obj - 1)) / (MLX4_TABLE_CHUNK_SIZE / table->obj_size);
-
-	mutex_lock(&table->mutex);
-
-	if (--table->icm[i]->refcount == 0) {
-		mlx4_UNMAP_ICM(dev, table->virt + i * MLX4_TABLE_CHUNK_SIZE,
-			       MLX4_TABLE_CHUNK_SIZE / MLX4_ICM_PAGE_SIZE);
-		mlx4_free_icm(dev, table->icm[i], table->coherent);
-		table->icm[i] = NULL;
-	}
-
-	mutex_unlock(&table->mutex);
-}
-
-void *mlx4_table_find(struct mlx4_icm_table *table, int obj, dma_addr_t *dma_handle)
-{
-	int idx, offset, dma_offset, i;
-	struct mlx4_icm_chunk *chunk;
-	struct mlx4_icm *icm;
-	struct page *page = NULL;
-
-	if (!table->lowmem)
-		return NULL;
-
-	mutex_lock(&table->mutex);
-
-	idx = (obj & (table->num_obj - 1)) * table->obj_size;
-	icm = table->icm[idx / MLX4_TABLE_CHUNK_SIZE];
-	dma_offset = offset = idx % MLX4_TABLE_CHUNK_SIZE;
-
-	if (!icm)
-		goto out;
-
-	list_for_each_entry(chunk, &icm->chunk_list, list) {
-		for (i = 0; i < chunk->npages; ++i) {
-			if (dma_handle && dma_offset >= 0) {
-				if (sg_dma_len(&chunk->mem[i]) > dma_offset)
-					*dma_handle = sg_dma_address(&chunk->mem[i]) +
-						dma_offset;
-				dma_offset -= sg_dma_len(&chunk->mem[i]);
-			}
-			/*
-			 * DMA mapping can merge pages but not split them,
-			 * so if we found the page, dma_handle has already
-			 * been assigned to.
-			 */
-			if (chunk->mem[i].length > offset) {
-				page = sg_page(&chunk->mem[i]);
-				goto out;
-			}
-			offset -= chunk->mem[i].length;
-		}
-	}
-
-out:
-	mutex_unlock(&table->mutex);
-	return page ? lowmem_page_address(page) + offset : NULL;
-}
-
-int mlx4_table_get_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
-			 int start, int end)
-{
-	int inc = MLX4_TABLE_CHUNK_SIZE / table->obj_size;
-	int i, err;
-
-	for (i = start; i <= end; i += inc) {
-		err = mlx4_table_get(dev, table, i);
-		if (err)
-			goto fail;
-	}
-
-	return 0;
-
-fail:
-	while (i > start) {
-		i -= inc;
-		mlx4_table_put(dev, table, i);
-	}
-
-	return err;
-}
-
-void mlx4_table_put_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
-			  int start, int end)
-{
-	int i;
-
-	for (i = start; i <= end; i += MLX4_TABLE_CHUNK_SIZE / table->obj_size)
-		mlx4_table_put(dev, table, i);
-}
-
-int mlx4_init_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table,
-			u64 virt, int obj_size,	int nobj, int reserved,
-			int use_lowmem, int use_coherent)
-{
-	int obj_per_chunk;
-	int num_icm;
-	unsigned chunk_size;
-	int i;
-
-	obj_per_chunk = MLX4_TABLE_CHUNK_SIZE / obj_size;
-	num_icm = (nobj + obj_per_chunk - 1) / obj_per_chunk;
-
-	table->icm      = kcalloc(num_icm, sizeof *table->icm, GFP_KERNEL);
-	if (!table->icm)
-		return -ENOMEM;
-	table->virt     = virt;
-	table->num_icm  = num_icm;
-	table->num_obj  = nobj;
-	table->obj_size = obj_size;
-	table->lowmem   = use_lowmem;
-	table->coherent = use_coherent;
-	mutex_init(&table->mutex);
-
-	for (i = 0; i * MLX4_TABLE_CHUNK_SIZE < reserved * obj_size; ++i) {
-		chunk_size = MLX4_TABLE_CHUNK_SIZE;
-		if ((i + 1) * MLX4_TABLE_CHUNK_SIZE > nobj * obj_size)
-			chunk_size = PAGE_ALIGN(nobj * obj_size - i * MLX4_TABLE_CHUNK_SIZE);
-
-		table->icm[i] = mlx4_alloc_icm(dev, chunk_size >> PAGE_SHIFT,
-					       (use_lowmem ? GFP_KERNEL : GFP_HIGHUSER) |
-					       __GFP_NOWARN, use_coherent);
-		if (!table->icm[i])
-			goto err;
-		if (mlx4_MAP_ICM(dev, table->icm[i], virt + i * MLX4_TABLE_CHUNK_SIZE)) {
-			mlx4_free_icm(dev, table->icm[i], use_coherent);
-			table->icm[i] = NULL;
-			goto err;
-		}
-
-		/*
-		 * Add a reference to this ICM chunk so that it never
-		 * gets freed (since it contains reserved firmware objects).
-		 */
-		++table->icm[i]->refcount;
-	}
-
-	return 0;
-
-err:
-	for (i = 0; i < num_icm; ++i)
-		if (table->icm[i]) {
-			mlx4_UNMAP_ICM(dev, virt + i * MLX4_TABLE_CHUNK_SIZE,
-				       MLX4_TABLE_CHUNK_SIZE / MLX4_ICM_PAGE_SIZE);
-			mlx4_free_icm(dev, table->icm[i], use_coherent);
-		}
-
-	return -ENOMEM;
-}
-
-void mlx4_cleanup_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table)
-{
-	int i;
-
-	for (i = 0; i < table->num_icm; ++i)
-		if (table->icm[i]) {
-			mlx4_UNMAP_ICM(dev, table->virt + i * MLX4_TABLE_CHUNK_SIZE,
-				       MLX4_TABLE_CHUNK_SIZE / MLX4_ICM_PAGE_SIZE);
-			mlx4_free_icm(dev, table->icm[i], table->coherent);
-		}
-
-	kfree(table->icm);
-}