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path: root/drivers/infiniband/hw/mlx5/mr.c
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Diffstat (limited to 'drivers/infiniband/hw/mlx5/mr.c')
-rw-r--r--drivers/infiniband/hw/mlx5/mr.c257
1 files changed, 180 insertions, 77 deletions
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 654bc31bc428..1520a2f20f98 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -47,10 +47,25 @@ enum {
#define MLX5_UMR_ALIGN 2048
-static int clean_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr);
-static int dereg_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr);
+static void clean_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr);
+static void dereg_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr);
static int mr_cache_max_order(struct mlx5_ib_dev *dev);
static int unreg_umr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr);
+static bool umr_can_modify_entity_size(struct mlx5_ib_dev *dev)
+{
+ return !MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled);
+}
+
+static bool umr_can_use_indirect_mkey(struct mlx5_ib_dev *dev)
+{
+ return !MLX5_CAP_GEN(dev->mdev, umr_indirect_mkey_disabled);
+}
+
+static bool use_umr(struct mlx5_ib_dev *dev, int order)
+{
+ return order <= mr_cache_max_order(dev) &&
+ umr_can_modify_entity_size(dev);
+}
static int destroy_mkey(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
{
@@ -189,7 +204,9 @@ static int add_keys(struct mlx5_ib_dev *dev, int c, int num)
MLX5_SET(mkc, mkc, free, 1);
MLX5_SET(mkc, mkc, umr_en, 1);
- MLX5_SET(mkc, mkc, access_mode, ent->access_mode);
+ MLX5_SET(mkc, mkc, access_mode_1_0, ent->access_mode & 0x3);
+ MLX5_SET(mkc, mkc, access_mode_4_2,
+ (ent->access_mode >> 2) & 0x7);
MLX5_SET(mkc, mkc, qpn, 0xffffff);
MLX5_SET(mkc, mkc, translations_octword_size, ent->xlt);
@@ -220,26 +237,32 @@ static void remove_keys(struct mlx5_ib_dev *dev, int c, int num)
{
struct mlx5_mr_cache *cache = &dev->cache;
struct mlx5_cache_ent *ent = &cache->ent[c];
+ struct mlx5_ib_mr *tmp_mr;
struct mlx5_ib_mr *mr;
- int err;
+ LIST_HEAD(del_list);
int i;
for (i = 0; i < num; i++) {
spin_lock_irq(&ent->lock);
if (list_empty(&ent->head)) {
spin_unlock_irq(&ent->lock);
- return;
+ break;
}
mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list);
- list_del(&mr->list);
+ list_move(&mr->list, &del_list);
ent->cur--;
ent->size--;
spin_unlock_irq(&ent->lock);
- err = destroy_mkey(dev, mr);
- if (err)
- mlx5_ib_warn(dev, "failed destroy mkey\n");
- else
- kfree(mr);
+ mlx5_core_destroy_mkey(dev->mdev, &mr->mmkey);
+ }
+
+#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
+ synchronize_srcu(&dev->mr_srcu);
+#endif
+
+ list_for_each_entry_safe(mr, tmp_mr, &del_list, list) {
+ list_del(&mr->list);
+ kfree(mr);
}
}
@@ -562,26 +585,32 @@ static void clean_keys(struct mlx5_ib_dev *dev, int c)
{
struct mlx5_mr_cache *cache = &dev->cache;
struct mlx5_cache_ent *ent = &cache->ent[c];
+ struct mlx5_ib_mr *tmp_mr;
struct mlx5_ib_mr *mr;
- int err;
+ LIST_HEAD(del_list);
cancel_delayed_work(&ent->dwork);
while (1) {
spin_lock_irq(&ent->lock);
if (list_empty(&ent->head)) {
spin_unlock_irq(&ent->lock);
- return;
+ break;
}
mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list);
- list_del(&mr->list);
+ list_move(&mr->list, &del_list);
ent->cur--;
ent->size--;
spin_unlock_irq(&ent->lock);
- err = destroy_mkey(dev, mr);
- if (err)
- mlx5_ib_warn(dev, "failed destroy mkey\n");
- else
- kfree(mr);
+ mlx5_core_destroy_mkey(dev->mdev, &mr->mmkey);
+ }
+
+#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
+ synchronize_srcu(&dev->mr_srcu);
+#endif
+
+ list_for_each_entry_safe(mr, tmp_mr, &del_list, list) {
+ list_del(&mr->list);
+ kfree(mr);
}
}
@@ -780,7 +809,7 @@ struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc)
mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
- MLX5_SET(mkc, mkc, access_mode, MLX5_MKC_ACCESS_MODE_PA);
+ MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_PA);
MLX5_SET(mkc, mkc, a, !!(acc & IB_ACCESS_REMOTE_ATOMIC));
MLX5_SET(mkc, mkc, rw, !!(acc & IB_ACCESS_REMOTE_WRITE));
MLX5_SET(mkc, mkc, rr, !!(acc & IB_ACCESS_REMOTE_READ));
@@ -947,7 +976,10 @@ static inline int populate_xlt(struct mlx5_ib_mr *mr, int idx, int npages,
{
struct mlx5_ib_dev *dev = mr->dev;
struct ib_umem *umem = mr->umem;
+
if (flags & MLX5_IB_UPD_XLT_INDIRECT) {
+ if (!umr_can_use_indirect_mkey(dev))
+ return -EPERM;
mlx5_odp_populate_klm(xlt, idx, npages, mr, flags);
return npages;
}
@@ -977,7 +1009,6 @@ int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
{
struct mlx5_ib_dev *dev = mr->dev;
struct device *ddev = dev->ib_dev.dev.parent;
- struct mlx5_ib_ucontext *uctx = NULL;
int size;
void *xlt;
dma_addr_t dma;
@@ -993,6 +1024,11 @@ int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
size_t pages_to_map = 0;
size_t pages_iter = 0;
gfp_t gfp;
+ bool use_emergency_page = false;
+
+ if ((flags & MLX5_IB_UPD_XLT_INDIRECT) &&
+ !umr_can_use_indirect_mkey(dev))
+ return -EPERM;
/* UMR copies MTTs in units of MLX5_UMR_MTT_ALIGNMENT bytes,
* so we need to align the offset and length accordingly
@@ -1019,12 +1055,11 @@ int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
}
if (!xlt) {
- uctx = to_mucontext(mr->ibmr.pd->uobject->context);
mlx5_ib_warn(dev, "Using XLT emergency buffer\n");
+ xlt = (void *)mlx5_ib_get_xlt_emergency_page();
size = PAGE_SIZE;
- xlt = (void *)uctx->upd_xlt_page;
- mutex_lock(&uctx->upd_xlt_page_mutex);
memset(xlt, 0, size);
+ use_emergency_page = true;
}
pages_iter = size / desc_size;
dma = dma_map_single(ddev, xlt, size, DMA_TO_DEVICE);
@@ -1088,8 +1123,8 @@ int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
dma_unmap_single(ddev, dma, size, DMA_TO_DEVICE);
free_xlt:
- if (uctx)
- mutex_unlock(&uctx->upd_xlt_page_mutex);
+ if (use_emergency_page)
+ mlx5_ib_put_xlt_emergency_page();
else
free_pages((unsigned long)xlt, get_order(size));
@@ -1141,7 +1176,7 @@ static struct mlx5_ib_mr *reg_create(struct ib_mr *ibmr, struct ib_pd *pd,
mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
MLX5_SET(mkc, mkc, free, !populate);
- MLX5_SET(mkc, mkc, access_mode, MLX5_MKC_ACCESS_MODE_MTT);
+ MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_MTT);
MLX5_SET(mkc, mkc, a, !!(access_flags & IB_ACCESS_REMOTE_ATOMIC));
MLX5_SET(mkc, mkc, rw, !!(access_flags & IB_ACCESS_REMOTE_WRITE));
MLX5_SET(mkc, mkc, rr, !!(access_flags & IB_ACCESS_REMOTE_READ));
@@ -1197,22 +1232,96 @@ static void set_mr_fileds(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr,
mr->access_flags = access_flags;
}
+static struct ib_mr *mlx5_ib_get_memic_mr(struct ib_pd *pd, u64 memic_addr,
+ u64 length, int acc)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ int inlen = MLX5_ST_SZ_BYTES(create_mkey_in);
+ struct mlx5_core_dev *mdev = dev->mdev;
+ struct mlx5_ib_mr *mr;
+ void *mkc;
+ u32 *in;
+ int err;
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ in = kzalloc(inlen, GFP_KERNEL);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
+
+ MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_MEMIC & 0x3);
+ MLX5_SET(mkc, mkc, access_mode_4_2,
+ (MLX5_MKC_ACCESS_MODE_MEMIC >> 2) & 0x7);
+ MLX5_SET(mkc, mkc, a, !!(acc & IB_ACCESS_REMOTE_ATOMIC));
+ MLX5_SET(mkc, mkc, rw, !!(acc & IB_ACCESS_REMOTE_WRITE));
+ MLX5_SET(mkc, mkc, rr, !!(acc & IB_ACCESS_REMOTE_READ));
+ MLX5_SET(mkc, mkc, lw, !!(acc & IB_ACCESS_LOCAL_WRITE));
+ MLX5_SET(mkc, mkc, lr, 1);
+
+ MLX5_SET64(mkc, mkc, len, length);
+ MLX5_SET(mkc, mkc, pd, to_mpd(pd)->pdn);
+ MLX5_SET(mkc, mkc, qpn, 0xffffff);
+ MLX5_SET64(mkc, mkc, start_addr,
+ memic_addr - pci_resource_start(dev->mdev->pdev, 0));
+
+ err = mlx5_core_create_mkey(mdev, &mr->mmkey, in, inlen);
+ if (err)
+ goto err_in;
+
+ kfree(in);
+
+ mr->umem = NULL;
+ set_mr_fileds(dev, mr, 0, length, acc);
+
+ return &mr->ibmr;
+
+err_in:
+ kfree(in);
+
+err_free:
+ kfree(mr);
+
+ return ERR_PTR(err);
+}
+
+struct ib_mr *mlx5_ib_reg_dm_mr(struct ib_pd *pd, struct ib_dm *dm,
+ struct ib_dm_mr_attr *attr,
+ struct uverbs_attr_bundle *attrs)
+{
+ struct mlx5_ib_dm *mdm = to_mdm(dm);
+ u64 memic_addr;
+
+ if (attr->access_flags & ~MLX5_IB_DM_ALLOWED_ACCESS)
+ return ERR_PTR(-EINVAL);
+
+ memic_addr = mdm->dev_addr + attr->offset;
+
+ return mlx5_ib_get_memic_mr(pd, memic_addr, attr->length,
+ attr->access_flags);
+}
+
struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
u64 virt_addr, int access_flags,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(pd->device);
struct mlx5_ib_mr *mr = NULL;
+ bool populate_mtts = false;
struct ib_umem *umem;
int page_shift;
int npages;
int ncont;
int order;
int err;
- bool use_umr = true;
if (!IS_ENABLED(CONFIG_INFINIBAND_USER_MEM))
- return ERR_PTR(-EINVAL);
+ return ERR_PTR(-EOPNOTSUPP);
mlx5_ib_dbg(dev, "start 0x%llx, virt_addr 0x%llx, length 0x%llx, access_flags 0x%x\n",
start, virt_addr, length, access_flags);
@@ -1224,6 +1333,8 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
return ERR_PTR(-EINVAL);
mr = mlx5_ib_alloc_implicit_mr(to_mpd(pd), access_flags);
+ if (IS_ERR(mr))
+ return ERR_CAST(mr);
return &mr->ibmr;
}
#endif
@@ -1234,26 +1345,29 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
if (err < 0)
return ERR_PTR(err);
- if (order <= mr_cache_max_order(dev)) {
+ if (use_umr(dev, order)) {
mr = alloc_mr_from_cache(pd, umem, virt_addr, length, ncont,
page_shift, order, access_flags);
if (PTR_ERR(mr) == -EAGAIN) {
mlx5_ib_dbg(dev, "cache empty for order %d\n", order);
mr = NULL;
}
+ populate_mtts = false;
} else if (!MLX5_CAP_GEN(dev->mdev, umr_extended_translation_offset)) {
if (access_flags & IB_ACCESS_ON_DEMAND) {
err = -EINVAL;
pr_err("Got MR registration for ODP MR > 512MB, not supported for Connect-IB\n");
goto error;
}
- use_umr = false;
+ populate_mtts = true;
}
if (!mr) {
+ if (!umr_can_modify_entity_size(dev))
+ populate_mtts = true;
mutex_lock(&dev->slow_path_mutex);
mr = reg_create(NULL, pd, virt_addr, length, umem, ncont,
- page_shift, access_flags, !use_umr);
+ page_shift, access_flags, populate_mtts);
mutex_unlock(&dev->slow_path_mutex);
}
@@ -1271,7 +1385,7 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
update_odp_mr(mr);
#endif
- if (use_umr) {
+ if (!populate_mtts) {
int update_xlt_flags = MLX5_IB_UPD_XLT_ENABLE;
if (access_flags & IB_ACCESS_ON_DEMAND)
@@ -1286,7 +1400,9 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
}
}
+#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
mr->live = 1;
+#endif
return &mr->ibmr;
error:
ib_umem_release(umem);
@@ -1365,36 +1481,34 @@ int mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start,
ib_umem_release(mr->umem);
err = mr_umem_get(pd, addr, len, access_flags, &mr->umem,
&npages, &page_shift, &ncont, &order);
- if (err < 0) {
- clean_mr(dev, mr);
- return err;
- }
+ if (err)
+ goto err;
}
if (flags & IB_MR_REREG_TRANS && !use_umr_mtt_update(mr, addr, len)) {
/*
* UMR can't be used - MKey needs to be replaced.
*/
- if (mr->allocated_from_cache) {
+ if (mr->allocated_from_cache)
err = unreg_umr(dev, mr);
- if (err)
- mlx5_ib_warn(dev, "Failed to unregister MR\n");
- } else {
+ else
err = destroy_mkey(dev, mr);
- if (err)
- mlx5_ib_warn(dev, "Failed to destroy MKey\n");
- }
if (err)
- return err;
+ goto err;
mr = reg_create(ib_mr, pd, addr, len, mr->umem, ncont,
page_shift, access_flags, true);
- if (IS_ERR(mr))
- return PTR_ERR(mr);
+ if (IS_ERR(mr)) {
+ err = PTR_ERR(mr);
+ mr = to_mmr(ib_mr);
+ goto err;
+ }
mr->allocated_from_cache = 0;
+#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
mr->live = 1;
+#endif
} else {
/*
* Send a UMR WQE
@@ -1417,13 +1531,8 @@ int mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start,
err = rereg_umr(pd, mr, access_flags, flags);
}
- if (err) {
- mlx5_ib_warn(dev, "Failed to rereg UMR\n");
- ib_umem_release(mr->umem);
- mr->umem = NULL;
- clean_mr(dev, mr);
- return err;
- }
+ if (err)
+ goto err;
}
set_mr_fileds(dev, mr, npages, len, access_flags);
@@ -1432,6 +1541,14 @@ int mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start,
update_odp_mr(mr);
#endif
return 0;
+
+err:
+ if (mr->umem) {
+ ib_umem_release(mr->umem);
+ mr->umem = NULL;
+ }
+ clean_mr(dev, mr);
+ return err;
}
static int
@@ -1480,10 +1597,9 @@ mlx5_free_priv_descs(struct mlx5_ib_mr *mr)
}
}
-static int clean_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
+static void clean_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
{
int allocated_from_cache = mr->allocated_from_cache;
- int err;
if (mr->sig) {
if (mlx5_core_destroy_psv(dev->mdev,
@@ -1500,21 +1616,11 @@ static int clean_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
mlx5_free_priv_descs(mr);
- if (!allocated_from_cache) {
- u32 key = mr->mmkey.key;
-
- err = destroy_mkey(dev, mr);
- if (err) {
- mlx5_ib_warn(dev, "failed to destroy mkey 0x%x (%d)\n",
- key, err);
- return err;
- }
- }
-
- return 0;
+ if (!allocated_from_cache)
+ destroy_mkey(dev, mr);
}
-static int dereg_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
+static void dereg_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
{
int npages = mr->npages;
struct ib_umem *umem = mr->umem;
@@ -1555,16 +1661,12 @@ static int dereg_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
kfree(mr);
else
mlx5_mr_cache_free(dev, mr);
-
- return 0;
}
int mlx5_ib_dereg_mr(struct ib_mr *ibmr)
{
- struct mlx5_ib_dev *dev = to_mdev(ibmr->device);
- struct mlx5_ib_mr *mr = to_mmr(ibmr);
-
- return dereg_mr(dev, mr);
+ dereg_mr(to_mdev(ibmr->device), to_mmr(ibmr));
+ return 0;
}
struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
@@ -1645,7 +1747,8 @@ struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
goto err_free_in;
}
- MLX5_SET(mkc, mkc, access_mode, mr->access_mode);
+ MLX5_SET(mkc, mkc, access_mode_1_0, mr->access_mode & 0x3);
+ MLX5_SET(mkc, mkc, access_mode_4_2, (mr->access_mode >> 2) & 0x7);
MLX5_SET(mkc, mkc, umr_en, 1);
mr->ibmr.device = pd->device;
@@ -1726,7 +1829,7 @@ struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
MLX5_SET(mkc, mkc, pd, to_mpd(pd)->pdn);
MLX5_SET(mkc, mkc, umr_en, 1);
MLX5_SET(mkc, mkc, lr, 1);
- MLX5_SET(mkc, mkc, access_mode, MLX5_MKC_ACCESS_MODE_KLMS);
+ MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_KLMS);
MLX5_SET(mkc, mkc, en_rinval, !!((type == IB_MW_TYPE_2)));
MLX5_SET(mkc, mkc, qpn, 0xffffff);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-15 15:29:31 +0000