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| author | Leonid Ravich <Leonid.Ravich@emc.com> | 2020-04-16 20:06:21 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-04-17 17:28:39 +0530 |
| commit | bd2bf302eef21aafa6da2cf829b87a9e33150658 (patch) | |
| tree | 1887924dc5c14c2c3e5eec3d3f8289474e184c99 /drivers/dma | |
| parent | 2fea2906b5cbeffe49911e4735451af62fc121b4 (diff) | |
| download | linux-bd2bf302eef21aafa6da2cf829b87a9e33150658.tar.gz | |
dmaengine: ioat: fixing chunk sizing macros dependency
changing macros which assumption is chunk size of 2M,
which can be other size
prepare for changing allocation chunk size.
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Leonid Ravich <Leonid.Ravich@emc.com>
Link: https://lore.kernel.org/r/20200416170628.16196-1-leonid.ravich@dell.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ioat/dma.c | 14 | ||||
| -rw-r--r-- | drivers/dma/ioat/dma.h | 10 | ||||
| -rw-r--r-- | drivers/dma/ioat/init.c | 2 |
3 files changed, 15 insertions, 11 deletions
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index 18c011e57592..1e0e6c1d5533 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -332,8 +332,8 @@ ioat_alloc_ring_ent(struct dma_chan *chan, int idx, gfp_t flags) u8 *pos; off_t offs; - chunk = idx / IOAT_DESCS_PER_2M; - idx &= (IOAT_DESCS_PER_2M - 1); + chunk = idx / IOAT_DESCS_PER_CHUNK; + idx &= (IOAT_DESCS_PER_CHUNK - 1); offs = idx * IOAT_DESC_SZ; pos = (u8 *)ioat_chan->descs[chunk].virt + offs; phys = ioat_chan->descs[chunk].hw + offs; @@ -370,7 +370,8 @@ ioat_alloc_ring(struct dma_chan *c, int order, gfp_t flags) if (!ring) return NULL; - ioat_chan->desc_chunks = chunks = (total_descs * IOAT_DESC_SZ) / SZ_2M; + chunks = (total_descs * IOAT_DESC_SZ) / IOAT_CHUNK_SIZE; + ioat_chan->desc_chunks = chunks; for (i = 0; i < chunks; i++) { struct ioat_descs *descs = &ioat_chan->descs[i]; @@ -382,8 +383,9 @@ ioat_alloc_ring(struct dma_chan *c, int order, gfp_t flags) for (idx = 0; idx < i; idx++) { descs = &ioat_chan->descs[idx]; - dma_free_coherent(to_dev(ioat_chan), SZ_2M, - descs->virt, descs->hw); + dma_free_coherent(to_dev(ioat_chan), + IOAT_CHUNK_SIZE, + descs->virt, descs->hw); descs->virt = NULL; descs->hw = 0; } @@ -404,7 +406,7 @@ ioat_alloc_ring(struct dma_chan *c, int order, gfp_t flags) for (idx = 0; idx < ioat_chan->desc_chunks; idx++) { dma_free_coherent(to_dev(ioat_chan), - SZ_2M, + IOAT_CHUNK_SIZE, ioat_chan->descs[idx].virt, ioat_chan->descs[idx].hw); ioat_chan->descs[idx].virt = NULL; diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index b8e8e0b9693c..5216c6b7c99e 100644 --- a/drivers/dma/ioat/dma.h +++ b/drivers/dma/ioat/dma.h @@ -81,6 +81,11 @@ struct ioatdma_device { u32 msixpba; }; +#define IOAT_MAX_ORDER 16 +#define IOAT_MAX_DESCS (1 << IOAT_MAX_ORDER) +#define IOAT_CHUNK_SIZE (SZ_2M) +#define IOAT_DESCS_PER_CHUNK (IOAT_CHUNK_SIZE / IOAT_DESC_SZ) + struct ioat_descs { void *virt; dma_addr_t hw; @@ -128,7 +133,7 @@ struct ioatdma_chan { u16 produce; struct ioat_ring_ent **ring; spinlock_t prep_lock; - struct ioat_descs descs[2]; + struct ioat_descs descs[IOAT_MAX_DESCS / IOAT_DESCS_PER_CHUNK]; int desc_chunks; int intr_coalesce; int prev_intr_coalesce; @@ -301,9 +306,6 @@ static inline bool is_ioat_bug(unsigned long err) return !!err; } -#define IOAT_MAX_ORDER 16 -#define IOAT_MAX_DESCS 65536 -#define IOAT_DESCS_PER_2M 32768 static inline u32 ioat_ring_size(struct ioatdma_chan *ioat_chan) { diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index 60e9afbb896c..58d13564f88b 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -651,7 +651,7 @@ static void ioat_free_chan_resources(struct dma_chan *c) } for (i = 0; i < ioat_chan->desc_chunks; i++) { - dma_free_coherent(to_dev(ioat_chan), SZ_2M, + dma_free_coherent(to_dev(ioat_chan), IOAT_CHUNK_SIZE, ioat_chan->descs[i].virt, ioat_chan->descs[i].hw); ioat_chan->descs[i].virt = NULL; |