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IB/hfi1: Convert the macro AHG_HEADER_SET into an inline function

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AHG_HEADER_SET macro doesn't conform to the coding standards as it can
affect the control flow. Convert the macro AHG_HEADER_SET into an inline
function ahg_header_set().

Cc: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Harish Chegondi 2017-09-26 07:00:11 -07:00 committed by Doug Ledford
parent e870b4a1f5
commit d34ed562ac
2 changed files with 59 additions and 28 deletions
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58
drivers/infiniband/hw/hfi1/user_sdma.c
View File

@ -1254,20 +1254,25 @@ static int set_txreq_header_ahg(struct user_sdma_request *req,
struct user_sdma_txreq *tx, u32 datalen)
{
u32 ahg[AHG_KDETH_ARRAY_SIZE];
int diff = 0;
int idx = 0;
u8 omfactor; /* KDETH.OM */
struct hfi1_user_sdma_pkt_q *pq = req->pq;
struct hfi1_pkt_header *hdr = &req->hdr;
u16 pbclen = le16_to_cpu(hdr->pbc[0]);
u32 val32, tidval = 0, lrhlen = get_lrh_len(*hdr, pad_len(datalen));
size_t array_size = ARRAY_SIZE(ahg);
if (PBC2LRH(pbclen) != lrhlen) {
/* PBC.PbcLengthDWs */
AHG_HEADER_SET(ahg, diff, 0, 0, 12,
cpu_to_le16(LRH2PBC(lrhlen)));
idx = ahg_header_set(ahg, idx, array_size, 0, 0, 12,
(__force u16)cpu_to_le16(LRH2PBC(lrhlen)));
if (idx < 0)
return idx;
/* LRH.PktLen (we need the full 16 bits due to byte swap) */
AHG_HEADER_SET(ahg, diff, 3, 0, 16,
cpu_to_be16(lrhlen >> 2));
idx = ahg_header_set(ahg, idx, array_size, 3, 0, 16,
(__force u16)cpu_to_be16(lrhlen >> 2));
if (idx < 0)
return idx;
}
/*
@ -1278,12 +1283,23 @@ static int set_txreq_header_ahg(struct user_sdma_request *req,
(HFI1_CAP_IS_KSET(EXTENDED_PSN) ? 0x7fffffff : 0xffffff);
if (unlikely(tx->flags & TXREQ_FLAGS_REQ_ACK))
val32 |= 1UL << 31;
AHG_HEADER_SET(ahg, diff, 6, 0, 16, cpu_to_be16(val32 >> 16));
AHG_HEADER_SET(ahg, diff, 6, 16, 16, cpu_to_be16(val32 & 0xffff));
idx = ahg_header_set(ahg, idx, array_size, 6, 0, 16,
(__force u16)cpu_to_be16(val32 >> 16));
if (idx < 0)
return idx;
idx = ahg_header_set(ahg, idx, array_size, 6, 16, 16,
(__force u16)cpu_to_be16(val32 & 0xffff));
if (idx < 0)
return idx;
/* KDETH.Offset */
AHG_HEADER_SET(ahg, diff, 15, 0, 16,
cpu_to_le16(req->koffset & 0xffff));
AHG_HEADER_SET(ahg, diff, 15, 16, 16, cpu_to_le16(req->koffset >> 16));
idx = ahg_header_set(ahg, idx, array_size, 15, 0, 16,
(__force u16)cpu_to_le16(req->koffset & 0xffff));
if (idx < 0)
return idx;
idx = ahg_header_set(ahg, idx, array_size, 15, 16, 16,
(__force u16)cpu_to_le16(req->koffset >> 16));
if (idx < 0)
return idx;
if (req_opcode(req->info.ctrl) == EXPECTED) {
__le16 val;
@ -1310,10 +1326,13 @@ static int set_txreq_header_ahg(struct user_sdma_request *req,
KDETH_OM_MAX_SIZE) ? KDETH_OM_LARGE_SHIFT :
KDETH_OM_SMALL_SHIFT;
/* KDETH.OM and KDETH.OFFSET (TID) */
AHG_HEADER_SET(ahg, diff, 7, 0, 16,
((!!(omfactor - KDETH_OM_SMALL_SHIFT)) << 15 |
idx = ahg_header_set(
ahg, idx, array_size, 7, 0, 16,
((!!(omfactor - KDETH_OM_SMALL_SHIFT)) << 15 |
((req->tidoffset >> omfactor)
& 0x7fff)));
& 0x7fff)));
if (idx < 0)
return idx;
/* 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));
@ -1330,21 +1349,22 @@ static int set_txreq_header_ahg(struct user_sdma_request *req,
AHG_KDETH_INTR_SHIFT));
}
AHG_HEADER_SET(ahg, diff, 7, 16, 14, val);
idx = ahg_header_set(ahg, idx, array_size,
7, 16, 14, (__force u16)val);
if (idx < 0)
return idx;
}
if (diff < 0)
return diff;
trace_hfi1_sdma_user_header_ahg(pq->dd, pq->ctxt, pq->subctxt,
req->info.comp_idx, req->sde->this_idx,
req->ahg_idx, ahg, diff, tidval);
req->ahg_idx, ahg, idx, tidval);
sdma_txinit_ahg(&tx->txreq,
SDMA_TXREQ_F_USE_AHG,
datalen, req->ahg_idx, diff,
datalen, req->ahg_idx, idx,
ahg, sizeof(req->hdr),
user_sdma_txreq_cb);
return diff;
return idx;
}
/*

29
drivers/infiniband/hw/hfi1/user_sdma.h
View File

@ -80,15 +80,26 @@
#define PBC2LRH(x) ((((x) & 0xfff) << 2) - 4)
#define LRH2PBC(x) ((((x) >> 2) + 1) & 0xfff)
#define AHG_HEADER_SET(arr, idx, dw, bit, width, value) \
do { \
if ((idx) < ARRAY_SIZE((arr))) \
(arr)[(idx++)] = sdma_build_ahg_descriptor( \
(__force u16)(value), (dw), (bit), \
(width)); \
else \
return -ERANGE; \
} while (0)
/**
* Build an SDMA AHG header update descriptor and save it to an array.
* @arr - Array to save the descriptor to.
* @idx - Index of the array at which the descriptor will be saved.
* @array_size - Size of the array arr.
* @dw - Update index into the header in DWs.
* @bit - Start bit.
* @width - Field width.
* @value - 16 bits of immediate data to write into the field.
* Returns -ERANGE if idx is invalid. If successful, returns the next index
* (idx + 1) of the array to be used for the next descriptor.
*/
static inline int ahg_header_set(u32 *arr, int idx, size_t array_size,
u8 dw, u8 bit, u8 width, u16 value)
{
if ((size_t)idx >= array_size)
return -ERANGE;
arr[idx++] = sdma_build_ahg_descriptor(value, dw, bit, width);
return idx;
}
/* Tx request flag bits */
#define TXREQ_FLAGS_REQ_ACK BIT(0) /* Set the ACK bit in the header */