diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-15 23:03:32 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-15 23:03:32 +0300 |
commit | 4d5b57e05a67c3cfd8e2b2a64ca356245a15b1c6 (patch) | |
tree | d8f3ea3bc3ccfe289f414bbe9a4bdd1e935d9228 /drivers/infiniband/hw/hfi1/user_sdma.c | |
parent | 6df8b74b1720db1133ace0861cb6721bfe57819a (diff) | |
parent | 6f94ba20799b98c8badf047b184fb4cd7bc45e44 (diff) | |
download | linux-4d5b57e05a67c3cfd8e2b2a64ca356245a15b1c6.tar.xz |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma updates from Doug Ledford:
"This is the complete update for the rdma stack for this release cycle.
Most of it is typical driver and core updates, but there is the
entirely new VMWare pvrdma driver. You may have noticed that there
were changes in DaveM's pull request to the bnxt Ethernet driver to
support a RoCE RDMA driver. The bnxt_re driver was tentatively set to
be pulled in this release cycle, but it simply wasn't ready in time
and was dropped (a few review comments still to address, and some
multi-arch build issues like prefetch() not working across all
arches).
Summary:
- shared mlx5 updates with net stack (will drop out on merge if
Dave's tree has already been merged)
- driver updates: cxgb4, hfi1, hns-roce, i40iw, mlx4, mlx5, qedr, rxe
- debug cleanups
- new connection rejection helpers
- SRP updates
- various misc fixes
- new paravirt driver from vmware"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (210 commits)
IB: Add vmw_pvrdma driver
IB/mlx4: fix improper return value
IB/ocrdma: fix bad initialization
infiniband: nes: return value of skb_linearize should be handled
MAINTAINERS: Update Intel RDMA RNIC driver maintainers
MAINTAINERS: Remove Mitesh Ahuja from emulex maintainers
IB/core: fix unmap_sg argument
qede: fix general protection fault may occur on probe
IB/mthca: Replace pci_pool_alloc by pci_pool_zalloc
mlx5, calc_sq_size(): Make a debug message more informative
mlx5: Remove a set-but-not-used variable
mlx5: Use { } instead of { 0 } to init struct
IB/srp: Make writing the add_target sysfs attr interruptible
IB/srp: Make mapping failures easier to debug
IB/srp: Make login failures easier to debug
IB/srp: Introduce a local variable in srp_add_one()
IB/srp: Fix CONFIG_DYNAMIC_DEBUG=n build
IB/multicast: Check ib_find_pkey() return value
IPoIB: Avoid reading an uninitialized member variable
IB/mad: Fix an array index check
...
Diffstat (limited to 'drivers/infiniband/hw/hfi1/user_sdma.c')
-rw-r--r-- | drivers/infiniband/hw/hfi1/user_sdma.c | 60 |
1 files changed, 43 insertions, 17 deletions
diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c index 77697d690f3e..7d22f8ee98ef 100644 --- a/drivers/infiniband/hw/hfi1/user_sdma.c +++ b/drivers/infiniband/hw/hfi1/user_sdma.c @@ -115,6 +115,7 @@ MODULE_PARM_DESC(sdma_comp_size, "Size of User SDMA completion ring. Default: 12 #define KDETH_HCRC_LOWER_MASK 0xff #define AHG_KDETH_INTR_SHIFT 12 +#define AHG_KDETH_SH_SHIFT 13 #define PBC2LRH(x) ((((x) & 0xfff) << 2) - 4) #define LRH2PBC(x) ((((x) >> 2) + 1) & 0xfff) @@ -144,8 +145,9 @@ MODULE_PARM_DESC(sdma_comp_size, "Size of User SDMA completion ring. Default: 12 #define KDETH_OM_LARGE 64 #define KDETH_OM_MAX_SIZE (1 << ((KDETH_OM_LARGE / KDETH_OM_SMALL) + 1)) -/* Last packet in the request */ -#define TXREQ_FLAGS_REQ_LAST_PKT BIT(0) +/* Tx request flag bits */ +#define TXREQ_FLAGS_REQ_ACK BIT(0) /* Set the ACK bit in the header */ +#define TXREQ_FLAGS_REQ_DISABLE_SH BIT(1) /* Disable header suppression */ /* SDMA request flag bits */ #define SDMA_REQ_FOR_THREAD 1 @@ -943,8 +945,13 @@ static int user_sdma_send_pkts(struct user_sdma_request *req, unsigned maxpkts) tx->busycount = 0; INIT_LIST_HEAD(&tx->list); + /* + * For the last packet set the ACK request + * and disable header suppression. + */ if (req->seqnum == req->info.npkts - 1) - tx->flags |= TXREQ_FLAGS_REQ_LAST_PKT; + tx->flags |= (TXREQ_FLAGS_REQ_ACK | + TXREQ_FLAGS_REQ_DISABLE_SH); /* * Calculate the payload size - this is min of the fragment @@ -963,11 +970,22 @@ static int user_sdma_send_pkts(struct user_sdma_request *req, unsigned maxpkts) } datalen = compute_data_length(req, tx); + + /* + * Disable header suppression for the payload <= 8DWS. + * If there is an uncorrectable error in the receive + * data FIFO when the received payload size is less than + * or equal to 8DWS then the RxDmaDataFifoRdUncErr is + * not reported.There is set RHF.EccErr if the header + * is not suppressed. + */ if (!datalen) { SDMA_DBG(req, "Request has data but pkt len is 0"); ret = -EFAULT; goto free_tx; + } else if (datalen <= 32) { + tx->flags |= TXREQ_FLAGS_REQ_DISABLE_SH; } } @@ -990,6 +1008,10 @@ static int user_sdma_send_pkts(struct user_sdma_request *req, unsigned maxpkts) LRH2PBC(lrhlen); tx->hdr.pbc[0] = cpu_to_le16(pbclen); } + ret = check_header_template(req, &tx->hdr, + lrhlen, datalen); + if (ret) + goto free_tx; ret = sdma_txinit_ahg(&tx->txreq, SDMA_TXREQ_F_AHG_COPY, sizeof(tx->hdr) + datalen, @@ -1351,7 +1373,7 @@ static int set_txreq_header(struct user_sdma_request *req, req->seqnum)); /* Set ACK request on last packet */ - if (unlikely(tx->flags & TXREQ_FLAGS_REQ_LAST_PKT)) + if (unlikely(tx->flags & TXREQ_FLAGS_REQ_ACK)) hdr->bth[2] |= cpu_to_be32(1UL << 31); /* Set the new offset */ @@ -1384,8 +1406,8 @@ static int set_txreq_header(struct user_sdma_request *req, /* Set KDETH.TID based on value for this TID */ KDETH_SET(hdr->kdeth.ver_tid_offset, TID, EXP_TID_GET(tidval, IDX)); - /* Clear KDETH.SH only on the last packet */ - if (unlikely(tx->flags & TXREQ_FLAGS_REQ_LAST_PKT)) + /* Clear KDETH.SH when DISABLE_SH flag is set */ + if (unlikely(tx->flags & TXREQ_FLAGS_REQ_DISABLE_SH)) KDETH_SET(hdr->kdeth.ver_tid_offset, SH, 0); /* * Set the KDETH.OFFSET and KDETH.OM based on size of @@ -1429,7 +1451,7 @@ static int set_txreq_header_ahg(struct user_sdma_request *req, /* BTH.PSN and BTH.A */ val32 = (be32_to_cpu(hdr->bth[2]) + req->seqnum) & (HFI1_CAP_IS_KSET(EXTENDED_PSN) ? 0x7fffffff : 0xffffff); - if (unlikely(tx->flags & TXREQ_FLAGS_REQ_LAST_PKT)) + if (unlikely(tx->flags & TXREQ_FLAGS_REQ_ACK)) val32 |= 1UL << 31; AHG_HEADER_SET(req->ahg, diff, 6, 0, 16, cpu_to_be16(val32 >> 16)); AHG_HEADER_SET(req->ahg, diff, 6, 16, 16, cpu_to_be16(val32 & 0xffff)); @@ -1468,19 +1490,23 @@ static int set_txreq_header_ahg(struct user_sdma_request *req, AHG_HEADER_SET(req->ahg, diff, 7, 0, 16, ((!!(req->omfactor - KDETH_OM_SMALL)) << 15 | ((req->tidoffset / req->omfactor) & 0x7fff))); - /* KDETH.TIDCtrl, KDETH.TID */ + /* KDETH.TIDCtrl, KDETH.TID, KDETH.Intr, KDETH.SH */ val = cpu_to_le16(((EXP_TID_GET(tidval, CTRL) & 0x3) << 10) | - (EXP_TID_GET(tidval, IDX) & 0x3ff)); - /* Clear KDETH.SH on last packet */ - if (unlikely(tx->flags & TXREQ_FLAGS_REQ_LAST_PKT)) { - val |= cpu_to_le16(KDETH_GET(hdr->kdeth.ver_tid_offset, - INTR) << - AHG_KDETH_INTR_SHIFT); - val &= cpu_to_le16(~(1U << 13)); - AHG_HEADER_SET(req->ahg, diff, 7, 16, 14, val); + (EXP_TID_GET(tidval, IDX) & 0x3ff)); + + if (unlikely(tx->flags & TXREQ_FLAGS_REQ_DISABLE_SH)) { + val |= cpu_to_le16((KDETH_GET(hdr->kdeth.ver_tid_offset, + INTR) << + AHG_KDETH_INTR_SHIFT)); } else { - AHG_HEADER_SET(req->ahg, diff, 7, 16, 12, val); + val |= KDETH_GET(hdr->kdeth.ver_tid_offset, SH) ? + cpu_to_le16(0x1 << AHG_KDETH_SH_SHIFT) : + cpu_to_le16((KDETH_GET(hdr->kdeth.ver_tid_offset, + INTR) << + AHG_KDETH_INTR_SHIFT)); } + + AHG_HEADER_SET(req->ahg, diff, 7, 16, 14, val); } trace_hfi1_sdma_user_header_ahg(pq->dd, pq->ctxt, pq->subctxt, |