* SOFTWARE.
*/
+#include <linux/init.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/slab.h>
+#include <linux/kernel.h>
#include <linux/mlx4/cmd.h>
kfree(buddy->num_free);
}
-static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order)
+static u32 __mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order)
{
struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
u32 seg;
return seg;
}
+static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order)
+{
+ u64 in_param;
+ u64 out_param;
+ int err;
+
+ if (mlx4_is_mfunc(dev)) {
+ set_param_l(&in_param, order);
+ err = mlx4_cmd_imm(dev, in_param, &out_param, RES_MTT,
+ RES_OP_RESERVE_AND_MAP,
+ MLX4_CMD_ALLOC_RES,
+ MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_WRAPPED);
+ if (err)
+ return -1;
+ return get_param_l(&out_param);
+ }
+ return __mlx4_alloc_mtt_range(dev, order);
+}
+
int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift,
struct mlx4_mtt *mtt)
{
}
EXPORT_SYMBOL_GPL(mlx4_mtt_init);
-void mlx4_mtt_cleanup(struct mlx4_dev *dev, struct mlx4_mtt *mtt)
+static void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 first_seg,
+ int order)
{
struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
+ mlx4_buddy_free(&mr_table->mtt_buddy, first_seg, order);
+ mlx4_table_put_range(dev, &mr_table->mtt_table, first_seg,
+ first_seg + (1 << order) - 1);
+}
+
+static void mlx4_free_mtt_range(struct mlx4_dev *dev, u32 first_seg, int order)
+{
+ u64 in_param;
+ int err;
+
+ if (mlx4_is_mfunc(dev)) {
+ set_param_l(&in_param, first_seg);
+ set_param_h(&in_param, order);
+ err = mlx4_cmd(dev, in_param, RES_MTT, RES_OP_RESERVE_AND_MAP,
+ MLX4_CMD_FREE_RES,
+ MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_WRAPPED);
+ if (err)
+ mlx4_warn(dev, "Failed to free mtt range at:%d"
+ " order:%d\n", first_seg, order);
+ return;
+ }
+ __mlx4_free_mtt_range(dev, first_seg, order);
+}
+
+void mlx4_mtt_cleanup(struct mlx4_dev *dev, struct mlx4_mtt *mtt)
+{
if (mtt->order < 0)
return;
- mlx4_buddy_free(&mr_table->mtt_buddy, mtt->first_seg, mtt->order);
- mlx4_table_put_range(dev, &mr_table->mtt_table, mtt->first_seg,
- mtt->first_seg + (1 << mtt->order) - 1);
+ mlx4_free_mtt_range(dev, mtt->first_seg, mtt->order);
}
EXPORT_SYMBOL_GPL(mlx4_mtt_cleanup);
static int mlx4_SW2HW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
int mpt_index)
{
- return mlx4_cmd(dev, mailbox->dma, mpt_index, 0, MLX4_CMD_SW2HW_MPT,
- MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
+ return mlx4_cmd(dev, mailbox->dma | dev->caps.function , mpt_index,
+ 0, MLX4_CMD_SW2HW_MPT, MLX4_CMD_TIME_CLASS_B,
+ MLX4_CMD_WRAPPED);
}
static int mlx4_HW2SW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
}
-int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access,
- int npages, int page_shift, struct mlx4_mr *mr)
+static int mlx4_mr_reserve_range(struct mlx4_dev *dev, int cnt, int align,
+ u32 *base_mridx)
{
struct mlx4_priv *priv = mlx4_priv(dev);
- u32 index;
- int err;
+ u32 mridx;
- index = mlx4_bitmap_alloc(&priv->mr_table.mpt_bitmap);
- if (index == -1)
+ mridx = mlx4_bitmap_alloc_range(&priv->mr_table.mpt_bitmap, cnt, align);
+ if (mridx == -1)
return -ENOMEM;
+ *base_mridx = mridx;
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(mlx4_mr_reserve_range);
+
+static void mlx4_mr_release_range(struct mlx4_dev *dev, u32 base_mridx, int cnt)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ mlx4_bitmap_free_range(&priv->mr_table.mpt_bitmap, base_mridx, cnt);
+}
+EXPORT_SYMBOL_GPL(mlx4_mr_release_range);
+
+static int mlx4_mr_alloc_reserved(struct mlx4_dev *dev, u32 mridx, u32 pd,
+ u64 iova, u64 size, u32 access, int npages,
+ int page_shift, struct mlx4_mr *mr)
+{
mr->iova = iova;
mr->size = size;
mr->pd = pd;
mr->access = access;
- mr->enabled = 0;
- mr->key = hw_index_to_key(index);
+ mr->enabled = MLX4_MR_DISABLED;
+ mr->key = hw_index_to_key(mridx);
+
+ return mlx4_mtt_init(dev, npages, page_shift, &mr->mtt);
+}
+EXPORT_SYMBOL_GPL(mlx4_mr_alloc_reserved);
+
+static int mlx4_WRITE_MTT(struct mlx4_dev *dev,
+ struct mlx4_cmd_mailbox *mailbox,
+ int num_entries)
+{
+ return mlx4_cmd(dev, mailbox->dma, num_entries, 0, MLX4_CMD_WRITE_MTT,
+ MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
+}
+
+static int __mlx4_mr_reserve(struct mlx4_dev *dev)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+
+ return mlx4_bitmap_alloc(&priv->mr_table.mpt_bitmap);
+}
- err = mlx4_mtt_init(dev, npages, page_shift, &mr->mtt);
+static int mlx4_mr_reserve(struct mlx4_dev *dev)
+{
+ u64 out_param;
+
+ if (mlx4_is_mfunc(dev)) {
+ if (mlx4_cmd_imm(dev, 0, &out_param, RES_MPT, RES_OP_RESERVE,
+ MLX4_CMD_ALLOC_RES,
+ MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED))
+ return -1;
+ return get_param_l(&out_param);
+ }
+ return __mlx4_mr_reserve(dev);
+}
+
+static void __mlx4_mr_release(struct mlx4_dev *dev, u32 index)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+
+ mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, index);
+}
+
+static void mlx4_mr_release(struct mlx4_dev *dev, u32 index)
+{
+ u64 in_param;
+
+ if (mlx4_is_mfunc(dev)) {
+ set_param_l(&in_param, index);
+ if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_RESERVE,
+ MLX4_CMD_FREE_RES,
+ MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED))
+ mlx4_warn(dev, "Failed to release mr index:%d\n",
+ index);
+ return;
+ }
+ __mlx4_mr_release(dev, index);
+}
+
+static int __mlx4_mr_alloc_icm(struct mlx4_dev *dev, u32 index)
+{
+ struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
+
+ return mlx4_table_get(dev, &mr_table->dmpt_table, index);
+}
+
+static int mlx4_mr_alloc_icm(struct mlx4_dev *dev, u32 index)
+{
+ u64 param;
+
+ if (mlx4_is_mfunc(dev)) {
+ set_param_l(¶m, index);
+ return mlx4_cmd_imm(dev, param, ¶m, RES_MPT, RES_OP_MAP_ICM,
+ MLX4_CMD_ALLOC_RES,
+ MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_WRAPPED);
+ }
+ return __mlx4_mr_alloc_icm(dev, index);
+}
+
+static void __mlx4_mr_free_icm(struct mlx4_dev *dev, u32 index)
+{
+ struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
+
+ mlx4_table_put(dev, &mr_table->dmpt_table, index);
+}
+
+static void mlx4_mr_free_icm(struct mlx4_dev *dev, u32 index)
+{
+ u64 in_param;
+
+ if (mlx4_is_mfunc(dev)) {
+ set_param_l(&in_param, index);
+ if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_MAP_ICM,
+ MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_WRAPPED))
+ mlx4_warn(dev, "Failed to free icm of mr index:%d\n",
+ index);
+ return;
+ }
+ return __mlx4_mr_free_icm(dev, index);
+}
+
+int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access,
+ int npages, int page_shift, struct mlx4_mr *mr)
+{
+ u32 index;
+ int err;
+
+ index = mlx4_mr_reserve(dev);
+ if (index == -1)
+ return -ENOMEM;
+
+ err = mlx4_mr_alloc_reserved(dev, index, pd, iova, size,
+ access, npages, page_shift, mr);
if (err)
- mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, index);
+ mlx4_mr_release(dev, index);
return err;
}
EXPORT_SYMBOL_GPL(mlx4_mr_alloc);
-void mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr)
+static void mlx4_mr_free_reserved(struct mlx4_dev *dev, struct mlx4_mr *mr)
{
- struct mlx4_priv *priv = mlx4_priv(dev);
int err;
- if (mr->enabled) {
+ if (mr->enabled == MLX4_MR_EN_HW) {
err = mlx4_HW2SW_MPT(dev, NULL,
key_to_hw_index(mr->key) &
(dev->caps.num_mpts - 1));
if (err)
- mlx4_warn(dev, "HW2SW_MPT failed (%d)\n", err);
- }
+ mlx4_warn(dev, "xxx HW2SW_MPT failed (%d)\n", err);
+ mr->enabled = MLX4_MR_EN_SW;
+ }
mlx4_mtt_cleanup(dev, &mr->mtt);
- mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, key_to_hw_index(mr->key));
+}
+EXPORT_SYMBOL_GPL(mlx4_mr_free_reserved);
+
+void mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr)
+{
+ mlx4_mr_free_reserved(dev, mr);
+ if (mr->enabled)
+ mlx4_mr_free_icm(dev, key_to_hw_index(mr->key));
+ mlx4_mr_release(dev, key_to_hw_index(mr->key));
}
EXPORT_SYMBOL_GPL(mlx4_mr_free);
int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr)
{
- struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mpt_entry *mpt_entry;
int err;
- err = mlx4_table_get(dev, &mr_table->dmpt_table, key_to_hw_index(mr->key));
+ err = mlx4_mr_alloc_icm(dev, key_to_hw_index(mr->key));
if (err)
return err;
mlx4_warn(dev, "SW2HW_MPT failed (%d)\n", err);
goto err_cmd;
}
-
- mr->enabled = 1;
+ mr->enabled = MLX4_MR_EN_HW;
mlx4_free_cmd_mailbox(dev, mailbox);
mlx4_free_cmd_mailbox(dev, mailbox);
err_table:
- mlx4_table_put(dev, &mr_table->dmpt_table, key_to_hw_index(mr->key));
+ mlx4_mr_free_icm(dev, key_to_hw_index(mr->key));
return err;
}
EXPORT_SYMBOL_GPL(mlx4_mr_enable);
return 0;
}
-int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
- int start_index, int npages, u64 *page_list)
+static int __mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
+ int start_index, int npages, u64 *page_list)
{
+ int err = 0;
int chunk;
- int err;
-
- if (mtt->order < 0)
- return -EINVAL;
while (npages > 0) {
chunk = min_t(int, PAGE_SIZE / sizeof(u64), npages);
err = mlx4_write_mtt_chunk(dev, mtt, start_index, chunk, page_list);
if (err)
return err;
-
npages -= chunk;
start_index += chunk;
page_list += chunk;
}
+ return err;
+}
- return 0;
+int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
+ int start_index, int npages, u64 *page_list)
+{
+ struct mlx4_cmd_mailbox *mailbox = NULL;
+ __be64 *inbox = NULL;
+ int chunk;
+ int err = 0;
+ int i;
+
+ if (mtt->order < 0)
+ return -EINVAL;
+
+ if (mlx4_is_mfunc(dev)) {
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+ inbox = mailbox->buf;
+
+ while (npages > 0) {
+ int s = mtt->first_seg * dev->caps.mtts_per_seg +
+ start_index;
+ chunk = min_t(int, MLX4_MAILBOX_SIZE / sizeof(u64) -
+ dev->caps.mtts_per_seg, npages);
+ if (s / (PAGE_SIZE / sizeof(u64)) !=
+ (s + chunk - 1) / (PAGE_SIZE / sizeof(u64)))
+ chunk = PAGE_SIZE / sizeof(u64) -
+ (s % (PAGE_SIZE / sizeof(u64)));
+
+ inbox[0] = cpu_to_be64(mtt->first_seg *
+ dev->caps.mtts_per_seg +
+ start_index);
+ inbox[1] = 0;
+ for (i = 0; i < chunk; ++i)
+ inbox[i + 2] = cpu_to_be64(page_list[i] |
+ MLX4_MTT_FLAG_PRESENT);
+ err = mlx4_WRITE_MTT(dev, mailbox, chunk);
+ if (err) {
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+ }
+
+ npages -= chunk;
+ start_index += chunk;
+ page_list += chunk;
+ }
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+ }
+
+ return __mlx4_write_mtt(dev, mtt, start_index, npages, page_list);
}
EXPORT_SYMBOL_GPL(mlx4_write_mtt);
int mlx4_init_mr_table(struct mlx4_dev *dev)
{
- struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ struct mlx4_mr_table *mr_table = &priv->mr_table;
int err;
+ if (!is_power_of_2(dev->caps.num_mpts))
+ return -EINVAL;
+
+ /* Nothing to do for slaves - all MR handling is forwarded
+ * to the master */
+ if (mlx4_is_slave(dev))
+ return 0;
+
err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts,
~0, dev->caps.reserved_mrws, 0);
if (err)
goto err_buddy;
if (dev->caps.reserved_mtts) {
- if (mlx4_alloc_mtt_range(dev, fls(dev->caps.reserved_mtts - 1)) == -1) {
+ priv->reserved_mtts =
+ mlx4_alloc_mtt_range(dev,
+ fls(dev->caps.reserved_mtts - 1));
+ if (priv->reserved_mtts < 0) {
mlx4_warn(dev, "MTT table of order %d is too small.\n",
mr_table->mtt_buddy.max_order);
err = -ENOMEM;
void mlx4_cleanup_mr_table(struct mlx4_dev *dev)
{
- struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ struct mlx4_mr_table *mr_table = &priv->mr_table;
+ if (mlx4_is_slave(dev))
+ return;
+ if (priv->reserved_mtts >= 0)
+ mlx4_free_mtt_range(dev, priv->reserved_mtts,
+ fls(dev->caps.reserved_mtts - 1));
mlx4_buddy_cleanup(&mr_table->mtt_buddy);
mlx4_bitmap_cleanup(&mr_table->mpt_bitmap);
}
}
EXPORT_SYMBOL_GPL(mlx4_fmr_alloc);
+static int mlx4_fmr_alloc_reserved(struct mlx4_dev *dev, u32 mridx,
+ u32 pd, u32 access, int max_pages,
+ int max_maps, u8 page_shift, struct mlx4_fmr *fmr)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ int err = -ENOMEM;
+
+ if (page_shift < (ffs(dev->caps.page_size_cap) - 1) || page_shift >= 32)
+ return -EINVAL;
+
+ /* All MTTs must fit in the same page */
+ if (max_pages * sizeof *fmr->mtts > PAGE_SIZE)
+ return -EINVAL;
+
+ fmr->page_shift = page_shift;
+ fmr->max_pages = max_pages;
+ fmr->max_maps = max_maps;
+ fmr->maps = 0;
+
+ err = mlx4_mr_alloc_reserved(dev, mridx, pd, 0, 0, access, max_pages,
+ page_shift, &fmr->mr);
+ if (err)
+ return err;
+
+ fmr->mtts = mlx4_table_find(&priv->mr_table.mtt_table,
+ fmr->mr.mtt.first_seg,
+ &fmr->dma_handle);
+ if (!fmr->mtts) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ return 0;
+
+err_free:
+ mlx4_mr_free_reserved(dev, &fmr->mr);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_fmr_alloc_reserved);
+
int mlx4_fmr_enable(struct mlx4_dev *dev, struct mlx4_fmr *fmr)
{
struct mlx4_priv *priv = mlx4_priv(dev);
void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr,
u32 *lkey, u32 *rkey)
{
+ struct mlx4_cmd_mailbox *mailbox;
+ int err;
+
if (!fmr->maps)
return;
fmr->maps = 0;
- *(u8 *) fmr->mpt = MLX4_MPT_STATUS_SW;
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox)) {
+ err = PTR_ERR(mailbox);
+ printk(KERN_WARNING "mlx4_ib: mlx4_alloc_cmd_mailbox"
+ " failed (%d)\n", err);
+ return;
+ }
+
+ err = mlx4_HW2SW_MPT(dev, NULL,
+ key_to_hw_index(fmr->mr.key) &
+ (dev->caps.num_mpts - 1));
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ if (err) {
+ printk(KERN_WARNING "mlx4_ib: mlx4_HW2SW_MPT failed (%d)\n",
+ err);
+ return;
+ }
+ fmr->mr.enabled = MLX4_MR_EN_SW;
}
EXPORT_SYMBOL_GPL(mlx4_fmr_unmap);
if (fmr->maps)
return -EBUSY;
- fmr->mr.enabled = 0;
mlx4_mr_free(dev, &fmr->mr);
+ fmr->mr.enabled = MLX4_MR_DISABLED;
return 0;
}
EXPORT_SYMBOL_GPL(mlx4_fmr_free);
+static int mlx4_fmr_free_reserved(struct mlx4_dev *dev, struct mlx4_fmr *fmr)
+{
+ if (fmr->maps)
+ return -EBUSY;
+
+ mlx4_mr_free_reserved(dev, &fmr->mr);
+ fmr->mr.enabled = MLX4_MR_DISABLED;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mlx4_fmr_free_reserved);
+
int mlx4_SYNC_TPT(struct mlx4_dev *dev)
{
return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_SYNC_TPT, 1000,
projects / linux-beck.git / commitdiff