add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/drivers/ntb/hw/intel/ntb_hw_gen3.c
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@@ -415,9 +415,8 @@
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 	return ret;
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 }
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-static int intel_ntb3_link_enable(struct ntb_dev *ntb,
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-				  enum ntb_speed max_speed,
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-				  enum ntb_width max_width)
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+int intel_ntb3_link_enable(struct ntb_dev *ntb, enum ntb_speed max_speed,
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+		enum ntb_width max_width)
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 {
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 	struct intel_ntb_dev *ndev;
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 	u32 ntb_ctl;
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@@ -532,7 +531,38 @@
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 	return 0;
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 }
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-static int intel_ntb3_peer_db_set(struct ntb_dev *ntb, u64 db_bits)
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+int intel_ntb3_peer_db_addr(struct ntb_dev *ntb, phys_addr_t *db_addr,
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+				   resource_size_t *db_size,
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+				   u64 *db_data, int db_bit)
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+{
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+	phys_addr_t db_addr_base;
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+	struct intel_ntb_dev *ndev = ntb_ndev(ntb);
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+
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+	if (unlikely(db_bit >= BITS_PER_LONG_LONG))
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+		return -EINVAL;
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+
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+	if (unlikely(BIT_ULL(db_bit) & ~ntb_ndev(ntb)->db_valid_mask))
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+		return -EINVAL;
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+
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+	ndev_db_addr(ndev, &db_addr_base, db_size, ndev->peer_addr,
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+				ndev->peer_reg->db_bell);
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+
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+	if (db_addr) {
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+		*db_addr = db_addr_base + (db_bit * 4);
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+		dev_dbg(&ndev->ntb.pdev->dev, "Peer db addr %llx db bit %d\n",
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+				*db_addr, db_bit);
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+	}
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+
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+	if (db_data) {
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+		*db_data = 1;
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+		dev_dbg(&ndev->ntb.pdev->dev, "Peer db data %llx db bit %d\n",
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+				*db_data, db_bit);
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+	}
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+
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+	return 0;
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+}
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+
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+int intel_ntb3_peer_db_set(struct ntb_dev *ntb, u64 db_bits)
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 {
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 	struct intel_ntb_dev *ndev = ntb_ndev(ntb);
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 	int bit;
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@@ -550,7 +580,7 @@
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 	return 0;
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 }
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-static u64 intel_ntb3_db_read(struct ntb_dev *ntb)
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+u64 intel_ntb3_db_read(struct ntb_dev *ntb)
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 {
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 	struct intel_ntb_dev *ndev = ntb_ndev(ntb);
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586
 
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@@ -559,7 +589,7 @@
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 			    ndev->self_reg->db_clear);
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 }
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-static int intel_ntb3_db_clear(struct ntb_dev *ntb, u64 db_bits)
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+int intel_ntb3_db_clear(struct ntb_dev *ntb, u64 db_bits)
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 {
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 	struct intel_ntb_dev *ndev = ntb_ndev(ntb);
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@@ -584,7 +614,7 @@
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 	.db_clear		= intel_ntb3_db_clear,
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 	.db_set_mask		= intel_ntb_db_set_mask,
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 	.db_clear_mask		= intel_ntb_db_clear_mask,
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-	.peer_db_addr		= intel_ntb_peer_db_addr,
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+	.peer_db_addr		= intel_ntb3_peer_db_addr,
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 	.peer_db_set		= intel_ntb3_peer_db_set,
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 	.spad_is_unsafe		= intel_ntb_spad_is_unsafe,
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 	.spad_count		= intel_ntb_spad_count,