diff options
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_mr.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_mr.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c index e995e2aa016d..698b62125765 100644 --- a/drivers/infiniband/hw/mthca/mthca_mr.c +++ b/drivers/infiniband/hw/mthca/mthca_mr.c @@ -76,6 +76,8 @@ struct mthca_mpt_entry { #define MTHCA_MPT_STATUS_SW 0xF0 #define MTHCA_MPT_STATUS_HW 0x00 +#define SINAI_FMR_KEY_INC 0x1000000 + /* * Buddy allocator for MTT segments (currently not very efficient * since it doesn't keep a free list and just searches linearly @@ -330,6 +332,14 @@ static inline u32 key_to_hw_index(struct mthca_dev *dev, u32 key) return tavor_key_to_hw_index(key); } +static inline u32 adjust_key(struct mthca_dev *dev, u32 key) +{ + if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT) + return ((key << 20) & 0x800000) | (key & 0x7fffff); + else + return key; +} + int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift, u64 iova, u64 total_size, u32 access, struct mthca_mr *mr) { @@ -340,13 +350,12 @@ int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift, int err; u8 status; - might_sleep(); - WARN_ON(buffer_size_shift >= 32); key = mthca_alloc(&dev->mr_table.mpt_alloc); if (key == -1) return -ENOMEM; + key = adjust_key(dev, key); mr->ibmr.rkey = mr->ibmr.lkey = hw_index_to_key(dev, key); if (mthca_is_memfree(dev)) { @@ -467,8 +476,6 @@ void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr) int err; u8 status; - might_sleep(); - err = mthca_HW2SW_MPT(dev, NULL, key_to_hw_index(dev, mr->ibmr.lkey) & (dev->limits.num_mpts - 1), @@ -495,9 +502,7 @@ int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd, int err = -ENOMEM; int i; - might_sleep(); - - if (mr->attr.page_size < 12 || mr->attr.page_size >= 32) + if (mr->attr.page_shift < 12 || mr->attr.page_shift >= 32) return -EINVAL; /* For Arbel, all MTTs must fit in the same page. */ @@ -510,6 +515,7 @@ int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd, key = mthca_alloc(&dev->mr_table.mpt_alloc); if (key == -1) return -ENOMEM; + key = adjust_key(dev, key); idx = key & (dev->limits.num_mpts - 1); mr->ibmr.rkey = mr->ibmr.lkey = hw_index_to_key(dev, key); @@ -523,7 +529,7 @@ int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd, BUG_ON(!mr->mem.arbel.mpt); } else mr->mem.tavor.mpt = dev->mr_table.tavor_fmr.mpt_base + - sizeof *(mr->mem.tavor.mpt) * idx; + sizeof *(mr->mem.tavor.mpt) * idx; mr->mtt = __mthca_alloc_mtt(dev, list_len, dev->mr_table.fmr_mtt_buddy); if (IS_ERR(mr->mtt)) @@ -549,7 +555,7 @@ int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd, MTHCA_MPT_FLAG_REGION | access); - mpt_entry->page_size = cpu_to_be32(mr->attr.page_size - 12); + mpt_entry->page_size = cpu_to_be32(mr->attr.page_shift - 12); mpt_entry->key = cpu_to_be32(key); mpt_entry->pd = cpu_to_be32(pd); memset(&mpt_entry->start, 0, @@ -617,7 +623,7 @@ static inline int mthca_check_fmr(struct mthca_fmr *fmr, u64 *page_list, if (list_len > fmr->attr.max_pages) return -EINVAL; - page_mask = (1 << fmr->attr.page_size) - 1; + page_mask = (1 << fmr->attr.page_shift) - 1; /* We are getting page lists, so va must be page aligned. */ if (iova & page_mask) @@ -665,7 +671,7 @@ int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, } mpt_entry.lkey = cpu_to_be32(key); - mpt_entry.length = cpu_to_be64(list_len * (1ull << fmr->attr.page_size)); + mpt_entry.length = cpu_to_be64(list_len * (1ull << fmr->attr.page_shift)); mpt_entry.start = cpu_to_be64(iova); __raw_writel((__force u32) mpt_entry.lkey, &fmr->mem.tavor.mpt->key); @@ -693,7 +699,10 @@ int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, ++fmr->maps; key = arbel_key_to_hw_index(fmr->ibmr.lkey); - key += dev->limits.num_mpts; + if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT) + key += SINAI_FMR_KEY_INC; + else + key += dev->limits.num_mpts; fmr->ibmr.lkey = fmr->ibmr.rkey = arbel_hw_index_to_key(key); *(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW; @@ -706,7 +715,7 @@ int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, fmr->mem.arbel.mpt->key = cpu_to_be32(key); fmr->mem.arbel.mpt->lkey = cpu_to_be32(key); - fmr->mem.arbel.mpt->length = cpu_to_be64(list_len * (1ull << fmr->attr.page_size)); + fmr->mem.arbel.mpt->length = cpu_to_be64(list_len * (1ull << fmr->attr.page_shift)); fmr->mem.arbel.mpt->start = cpu_to_be64(iova); wmb(); @@ -766,6 +775,9 @@ int __devinit mthca_init_mr_table(struct mthca_dev *dev) else dev->mthca_flags |= MTHCA_FLAG_FMR; + if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT) + mthca_dbg(dev, "Memory key throughput optimization activated.\n"); + err = mthca_buddy_init(&dev->mr_table.mtt_buddy, fls(dev->limits.num_mtt_segs - 1)); @@ -785,7 +797,7 @@ int __devinit mthca_init_mr_table(struct mthca_dev *dev) } dev->mr_table.tavor_fmr.mpt_base = - ioremap(dev->mr_table.mpt_base, + ioremap(dev->mr_table.mpt_base, (1 << i) * sizeof (struct mthca_mpt_entry)); if (!dev->mr_table.tavor_fmr.mpt_base) { @@ -813,7 +825,7 @@ int __devinit mthca_init_mr_table(struct mthca_dev *dev) goto err_reserve_fmr; dev->mr_table.fmr_mtt_buddy = - &dev->mr_table.tavor_fmr.mtt_buddy; + &dev->mr_table.tavor_fmr.mtt_buddy; } else dev->mr_table.fmr_mtt_buddy = &dev->mr_table.mtt_buddy; |