net: hns3: Support "ethtool -d" for HNS3 VF driver

This patch adds "ethtool -d" support for HNS3 VF Driver.
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c

@@ -23,6 +23,58 @@ static const struct pci_device_id ae_algovf_pci_tbl[] = {
 
 MODULE_DEVICE_TABLE(pci, ae_algovf_pci_tbl);
 
+static const u32 cmdq_reg_addr_list[] = {HCLGEVF_CMDQ_TX_ADDR_L_REG,
+					 HCLGEVF_CMDQ_TX_ADDR_H_REG,
+					 HCLGEVF_CMDQ_TX_DEPTH_REG,
+					 HCLGEVF_CMDQ_TX_TAIL_REG,
+					 HCLGEVF_CMDQ_TX_HEAD_REG,
+					 HCLGEVF_CMDQ_RX_ADDR_L_REG,
+					 HCLGEVF_CMDQ_RX_ADDR_H_REG,
+					 HCLGEVF_CMDQ_RX_DEPTH_REG,
+					 HCLGEVF_CMDQ_RX_TAIL_REG,
+					 HCLGEVF_CMDQ_RX_HEAD_REG,
+					 HCLGEVF_VECTOR0_CMDQ_SRC_REG,
+					 HCLGEVF_CMDQ_INTR_STS_REG,
+					 HCLGEVF_CMDQ_INTR_EN_REG,
+					 HCLGEVF_CMDQ_INTR_GEN_REG};
+
+static const u32 common_reg_addr_list[] = {HCLGEVF_MISC_VECTOR_REG_BASE,
+					   HCLGEVF_RST_ING,
+					   HCLGEVF_GRO_EN_REG};
+
+static const u32 ring_reg_addr_list[] = {HCLGEVF_RING_RX_ADDR_L_REG,
+					 HCLGEVF_RING_RX_ADDR_H_REG,
+					 HCLGEVF_RING_RX_BD_NUM_REG,
+					 HCLGEVF_RING_RX_BD_LENGTH_REG,
+					 HCLGEVF_RING_RX_MERGE_EN_REG,
+					 HCLGEVF_RING_RX_TAIL_REG,
+					 HCLGEVF_RING_RX_HEAD_REG,
+					 HCLGEVF_RING_RX_FBD_NUM_REG,
+					 HCLGEVF_RING_RX_OFFSET_REG,
+					 HCLGEVF_RING_RX_FBD_OFFSET_REG,
+					 HCLGEVF_RING_RX_STASH_REG,
+					 HCLGEVF_RING_RX_BD_ERR_REG,
+					 HCLGEVF_RING_TX_ADDR_L_REG,
+					 HCLGEVF_RING_TX_ADDR_H_REG,
+					 HCLGEVF_RING_TX_BD_NUM_REG,
+					 HCLGEVF_RING_TX_PRIORITY_REG,
+					 HCLGEVF_RING_TX_TC_REG,
+					 HCLGEVF_RING_TX_MERGE_EN_REG,
+					 HCLGEVF_RING_TX_TAIL_REG,
+					 HCLGEVF_RING_TX_HEAD_REG,
+					 HCLGEVF_RING_TX_FBD_NUM_REG,
+					 HCLGEVF_RING_TX_OFFSET_REG,
+					 HCLGEVF_RING_TX_EBD_NUM_REG,
+					 HCLGEVF_RING_TX_EBD_OFFSET_REG,
+					 HCLGEVF_RING_TX_BD_ERR_REG,
+					 HCLGEVF_RING_EN_REG};
+
+static const u32 tqp_intr_reg_addr_list[] = {HCLGEVF_TQP_INTR_CTRL_REG,
+					     HCLGEVF_TQP_INTR_GL0_REG,
+					     HCLGEVF_TQP_INTR_GL1_REG,
+					     HCLGEVF_TQP_INTR_GL2_REG,
+					     HCLGEVF_TQP_INTR_RL_REG};
+
 static inline struct hclgevf_dev *hclgevf_ae_get_hdev(
 	struct hnae3_handle *handle)
 {
@@ -2473,6 +2525,72 @@ static unsigned long hclgevf_ae_dev_reset_cnt(struct hnae3_handle *handle)
 	return hdev->reset_count;
 }
 
+#define MAX_SEPARATE_NUM	4
+#define SEPARATOR_VALUE		0xFFFFFFFF
+#define REG_NUM_PER_LINE	4
+#define REG_LEN_PER_LINE	(REG_NUM_PER_LINE * sizeof(u32))
+
+static int hclgevf_get_regs_len(struct hnae3_handle *handle)
+{
+	int cmdq_lines, common_lines, ring_lines, tqp_intr_lines;
+	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
+
+	cmdq_lines = sizeof(cmdq_reg_addr_list) / REG_LEN_PER_LINE + 1;
+	common_lines = sizeof(common_reg_addr_list) / REG_LEN_PER_LINE + 1;
+	ring_lines = sizeof(ring_reg_addr_list) / REG_LEN_PER_LINE + 1;
+	tqp_intr_lines = sizeof(tqp_intr_reg_addr_list) / REG_LEN_PER_LINE + 1;
+
+	return (cmdq_lines + common_lines + ring_lines * hdev->num_tqps +
+		tqp_intr_lines * (hdev->num_msi_used - 1)) * REG_LEN_PER_LINE;
+}
+
+static void hclgevf_get_regs(struct hnae3_handle *handle, u32 *version,
+			     void *data)
+{
+	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
+	int i, j, reg_um, separator_num;
+	u32 *reg = data;
+
+	*version = hdev->fw_version;
+
+	/* fetching per-VF registers values from VF PCIe register space */
+	reg_um = sizeof(cmdq_reg_addr_list) / sizeof(u32);
+	separator_num = MAX_SEPARATE_NUM - reg_um % REG_NUM_PER_LINE;
+	for (i = 0; i < reg_um; i++)
+		*reg++ = hclgevf_read_dev(&hdev->hw, cmdq_reg_addr_list[i]);
+	for (i = 0; i < separator_num; i++)
+		*reg++ = SEPARATOR_VALUE;
+
+	reg_um = sizeof(common_reg_addr_list) / sizeof(u32);
+	separator_num = MAX_SEPARATE_NUM - reg_um % REG_NUM_PER_LINE;
+	for (i = 0; i < reg_um; i++)
+		*reg++ = hclgevf_read_dev(&hdev->hw, common_reg_addr_list[i]);
+	for (i = 0; i < separator_num; i++)
+		*reg++ = SEPARATOR_VALUE;
+
+	reg_um = sizeof(ring_reg_addr_list) / sizeof(u32);
+	separator_num = MAX_SEPARATE_NUM - reg_um % REG_NUM_PER_LINE;
+	for (j = 0; j < hdev->num_tqps; j++) {
+		for (i = 0; i < reg_um; i++)
+			*reg++ = hclgevf_read_dev(&hdev->hw,
+						  ring_reg_addr_list[i] +
+						  0x200 * j);
+		for (i = 0; i < separator_num; i++)
+			*reg++ = SEPARATOR_VALUE;
+	}
+
+	reg_um = sizeof(tqp_intr_reg_addr_list) / sizeof(u32);
+	separator_num = MAX_SEPARATE_NUM - reg_um % REG_NUM_PER_LINE;
+	for (j = 0; j < hdev->num_msi_used - 1; j++) {
+		for (i = 0; i < reg_um; i++)
+			*reg++ = hclgevf_read_dev(&hdev->hw,
+						  tqp_intr_reg_addr_list[i] +
+						  4 * j);
+		for (i = 0; i < separator_num; i++)
+			*reg++ = SEPARATOR_VALUE;
+	}
+}
+
 static const struct hnae3_ae_ops hclgevf_ops = {
 	.init_ae_dev = hclgevf_init_ae_dev,
 	.uninit_ae_dev = hclgevf_uninit_ae_dev,
@@ -2514,6 +2632,8 @@ static const struct hnae3_ae_ops hclgevf_ops = {
 	.set_default_reset_request = hclgevf_set_def_reset_request,
 	.get_channels = hclgevf_get_channels,
 	.get_tqps_and_rss_info = hclgevf_get_tqps_and_rss_info,
+	.get_regs_len = hclgevf_get_regs_len,
+	.get_regs = hclgevf_get_regs,
 	.get_status = hclgevf_get_status,
 	.get_ksettings_an_result = hclgevf_get_ksettings_an_result,
 	.get_media_type = hclgevf_get_media_type,

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h

@@ -27,6 +27,60 @@
 #define HCLGEVF_VECTOR_REG_OFFSET	0x4
 #define HCLGEVF_VECTOR_VF_OFFSET		0x100000
 
+/* bar registers for cmdq */
+#define HCLGEVF_CMDQ_TX_ADDR_L_REG		0x27000
+#define HCLGEVF_CMDQ_TX_ADDR_H_REG		0x27004
+#define HCLGEVF_CMDQ_TX_DEPTH_REG		0x27008
+#define HCLGEVF_CMDQ_TX_TAIL_REG		0x27010
+#define HCLGEVF_CMDQ_TX_HEAD_REG		0x27014
+#define HCLGEVF_CMDQ_RX_ADDR_L_REG		0x27018
+#define HCLGEVF_CMDQ_RX_ADDR_H_REG		0x2701C
+#define HCLGEVF_CMDQ_RX_DEPTH_REG		0x27020
+#define HCLGEVF_CMDQ_RX_TAIL_REG		0x27024
+#define HCLGEVF_CMDQ_RX_HEAD_REG		0x27028
+#define HCLGEVF_CMDQ_INTR_SRC_REG		0x27100
+#define HCLGEVF_CMDQ_INTR_STS_REG		0x27104
+#define HCLGEVF_CMDQ_INTR_EN_REG		0x27108
+#define HCLGEVF_CMDQ_INTR_GEN_REG		0x2710C
+
+/* bar registers for common func */
+#define HCLGEVF_GRO_EN_REG			0x28000
+
+/* bar registers for rcb */
+#define HCLGEVF_RING_RX_ADDR_L_REG		0x80000
+#define HCLGEVF_RING_RX_ADDR_H_REG		0x80004
+#define HCLGEVF_RING_RX_BD_NUM_REG		0x80008
+#define HCLGEVF_RING_RX_BD_LENGTH_REG		0x8000C
+#define HCLGEVF_RING_RX_MERGE_EN_REG		0x80014
+#define HCLGEVF_RING_RX_TAIL_REG		0x80018
+#define HCLGEVF_RING_RX_HEAD_REG		0x8001C
+#define HCLGEVF_RING_RX_FBD_NUM_REG		0x80020
+#define HCLGEVF_RING_RX_OFFSET_REG		0x80024
+#define HCLGEVF_RING_RX_FBD_OFFSET_REG		0x80028
+#define HCLGEVF_RING_RX_STASH_REG		0x80030
+#define HCLGEVF_RING_RX_BD_ERR_REG		0x80034
+#define HCLGEVF_RING_TX_ADDR_L_REG		0x80040
+#define HCLGEVF_RING_TX_ADDR_H_REG		0x80044
+#define HCLGEVF_RING_TX_BD_NUM_REG		0x80048
+#define HCLGEVF_RING_TX_PRIORITY_REG		0x8004C
+#define HCLGEVF_RING_TX_TC_REG			0x80050
+#define HCLGEVF_RING_TX_MERGE_EN_REG		0x80054
+#define HCLGEVF_RING_TX_TAIL_REG		0x80058
+#define HCLGEVF_RING_TX_HEAD_REG		0x8005C
+#define HCLGEVF_RING_TX_FBD_NUM_REG		0x80060
+#define HCLGEVF_RING_TX_OFFSET_REG		0x80064
+#define HCLGEVF_RING_TX_EBD_NUM_REG		0x80068
+#define HCLGEVF_RING_TX_EBD_OFFSET_REG		0x80070
+#define HCLGEVF_RING_TX_BD_ERR_REG		0x80074
+#define HCLGEVF_RING_EN_REG			0x80090
+
+/* bar registers for tqp interrupt */
+#define HCLGEVF_TQP_INTR_CTRL_REG		0x20000
+#define HCLGEVF_TQP_INTR_GL0_REG		0x20100
+#define HCLGEVF_TQP_INTR_GL1_REG		0x20200
+#define HCLGEVF_TQP_INTR_GL2_REG		0x20300
+#define HCLGEVF_TQP_INTR_RL_REG			0x20900
+
 /* Vector0 interrupt CMDQ event source register(RW) */
 #define HCLGEVF_VECTOR0_CMDQ_SRC_REG	0x27100
 /* CMDQ register bits for RX event(=MBX event) */