disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/ntb/hw/amd/ntb_hw_amd.h
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@@ -52,13 +52,9 @@
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 #include <linux/ntb.h>
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 #include <linux/pci.h>
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-#define PCI_DEVICE_ID_AMD_NTB	0x145B
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 #define AMD_LINK_HB_TIMEOUT	msecs_to_jiffies(1000)
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-#define AMD_LINK_STATUS_OFFSET	0x68
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-#define NTB_LIN_STA_ACTIVE_BIT	0x00000002
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 #define NTB_LNK_STA_SPEED_MASK	0x000F0000
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 #define NTB_LNK_STA_WIDTH_MASK	0x03F00000
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-#define NTB_LNK_STA_ACTIVE(x)	(!!((x) & NTB_LIN_STA_ACTIVE_BIT))
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 #define NTB_LNK_STA_SPEED(x)	(((x) & NTB_LNK_STA_SPEED_MASK) >> 16)
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 #define NTB_LNK_STA_WIDTH(x)	(((x) & NTB_LNK_STA_WIDTH_MASK) >> 20)
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@@ -93,7 +89,6 @@
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 enum {
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 	/* AMD NTB Capability */
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-	AMD_MW_CNT		= 3,
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 	AMD_DB_CNT		= 16,
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 	AMD_MSIX_VECTOR_CNT	= 24,
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 	AMD_SPADS_CNT		= 16,
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@@ -170,6 +165,11 @@
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 	AMD_PEER_OFFSET		= 0x400,
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 };
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+struct ntb_dev_data {
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+	const unsigned char mw_count;
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+	const unsigned int mw_idx;
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+};
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+
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 struct amd_ntb_dev;
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 struct amd_ntb_vec {
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@@ -185,6 +185,7 @@
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 	u32 cntl_sta;
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 	u32 peer_sta;
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+	struct ntb_dev_data *dev_data;
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 	unsigned char mw_count;
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 	unsigned char spad_count;
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 	unsigned char db_count;
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@@ -192,6 +193,7 @@
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 	u64 db_valid_mask;
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 	u64 db_mask;
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+	u64 db_last_bit;
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 	u32 int_mask;
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 	struct msix_entry *msix;
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@@ -214,4 +216,8 @@
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 #define ntb_ndev(__ntb) container_of(__ntb, struct amd_ntb_dev, ntb)
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 #define hb_ndev(__work) container_of(__work, struct amd_ntb_dev, hb_timer.work)
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+static void amd_set_side_info_reg(struct amd_ntb_dev *ndev, bool peer);
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+static void amd_clear_side_info_reg(struct amd_ntb_dev *ndev, bool peer);
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+static int amd_poll_link(struct amd_ntb_dev *ndev);
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+
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 #endif