modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/drivers/infiniband/hw/hfi1/sdma.h
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@@ -636,7 +636,10 @@
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 	struct sdma_txreq *tx,
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 	int type,
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 	dma_addr_t addr,
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-	size_t len)
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+	size_t len,
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+	void *pinning_ctx,
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+	void (*ctx_get)(void *),
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+	void (*ctx_put)(void *))
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 {
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 	struct sdma_desc *desc = &tx->descp[tx->num_desc];
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@@ -653,6 +656,11 @@
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 				<< SDMA_DESC0_PHY_ADDR_SHIFT) |
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 			(((u64)len & SDMA_DESC0_BYTE_COUNT_MASK)
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 				<< SDMA_DESC0_BYTE_COUNT_SHIFT);
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+
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+	desc->pinning_ctx = pinning_ctx;
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+	desc->ctx_put = ctx_put;
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+	if (pinning_ctx && ctx_get)
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+		ctx_get(pinning_ctx);
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 }
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 /* helper to extend txreq */
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@@ -672,14 +680,13 @@
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 static inline void _sdma_close_tx(struct hfi1_devdata *dd,
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 				  struct sdma_txreq *tx)
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 {
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-	tx->descp[tx->num_desc].qw[0] |=
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-		SDMA_DESC0_LAST_DESC_FLAG;
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-	tx->descp[tx->num_desc].qw[1] |=
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-		dd->default_desc1;
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+	u16 last_desc = tx->num_desc - 1;
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+
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+	tx->descp[last_desc].qw[0] |= SDMA_DESC0_LAST_DESC_FLAG;
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+	tx->descp[last_desc].qw[1] |= dd->default_desc1;
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 	if (tx->flags & SDMA_TXREQ_F_URGENT)
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-		tx->descp[tx->num_desc].qw[1] |=
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-			(SDMA_DESC1_HEAD_TO_HOST_FLAG |
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-			 SDMA_DESC1_INT_REQ_FLAG);
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+		tx->descp[last_desc].qw[1] |= (SDMA_DESC1_HEAD_TO_HOST_FLAG |
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+					       SDMA_DESC1_INT_REQ_FLAG);
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 }
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 static inline int _sdma_txadd_daddr(
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@@ -687,15 +694,20 @@
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 	int type,
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 	struct sdma_txreq *tx,
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 	dma_addr_t addr,
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-	u16 len)
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+	u16 len,
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+	void *pinning_ctx,
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+	void (*ctx_get)(void *),
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+	void (*ctx_put)(void *))
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 {
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 	int rval = 0;
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 	make_tx_sdma_desc(
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 		tx,
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 		type,
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-		addr, len);
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+		addr, len,
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+		pinning_ctx, ctx_get, ctx_put);
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 	WARN_ON(len > tx->tlen);
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+	tx->num_desc++;
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 	tx->tlen -= len;
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 	/* special cases for last */
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 	if (!tx->tlen) {
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@@ -707,7 +719,6 @@
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 			_sdma_close_tx(dd, tx);
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 		}
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 	}
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-	tx->num_desc++;
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 	return rval;
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 }
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@@ -718,6 +729,14 @@
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  * @page: page to map
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  * @offset: offset within the page
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  * @len: length in bytes
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+ * @pinning_ctx: context to be stored on struct sdma_desc .pinning_ctx. Not
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+ *               added if coalesce buffer is used. E.g. pointer to pinned-page
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+ *               cache entry for the sdma_desc.
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+ * @ctx_get: optional function to take reference to @pinning_ctx. Not called if
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+ *           @pinning_ctx is NULL.
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+ * @ctx_put: optional function to release reference to @pinning_ctx after
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+ *           sdma_desc completes. May be called in interrupt context so must
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+ *           not sleep. Not called if @pinning_ctx is NULL.
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  *
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  * This is used to add a page/offset/length descriptor.
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  *
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@@ -732,7 +751,10 @@
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 	struct sdma_txreq *tx,
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 	struct page *page,
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 	unsigned long offset,
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-	u16 len)
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+	u16 len,
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+	void *pinning_ctx,
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+	void (*ctx_get)(void *),
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+	void (*ctx_put)(void *))
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 {
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 	dma_addr_t addr;
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 	int rval;
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@@ -756,8 +778,8 @@
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 		return -ENOSPC;
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 	}
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-	return _sdma_txadd_daddr(
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-			dd, SDMA_MAP_PAGE, tx, addr, len);
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+	return _sdma_txadd_daddr(dd, SDMA_MAP_PAGE, tx, addr, len,
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+				 pinning_ctx, ctx_get, ctx_put);
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 }
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 /**
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@@ -791,7 +813,8 @@
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 			return rval;
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 	}
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-	return _sdma_txadd_daddr(dd, SDMA_MAP_NONE, tx, addr, len);
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+	return _sdma_txadd_daddr(dd, SDMA_MAP_NONE, tx, addr, len,
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+				 NULL, NULL, NULL);
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 }
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 /**
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@@ -837,8 +860,8 @@
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 		return -ENOSPC;
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 	}
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-	return _sdma_txadd_daddr(
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-			dd, SDMA_MAP_SINGLE, tx, addr, len);
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+	return _sdma_txadd_daddr(dd, SDMA_MAP_SINGLE, tx, addr, len,
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+				 NULL, NULL, NULL);
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 }
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 struct iowait_work;
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@@ -1089,5 +1112,4 @@
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 extern uint mod_num_sdma;
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 void sdma_update_lmc(struct hfi1_devdata *dd, u64 mask, u32 lid);
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-
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 #endif