[PATCH net-next 2/4] net: hns3: Support tlv in regs data for HNS3 PF driver
From: Jijie Shao
Date: Tue Aug 15 2023 - 02:13:16 EST
The dump register function is being refactored.
The second step in refactoring is to support tlv info in regs data for
HNS3 PF driver.
Currently, if we use "ethtool -d" to dump regs value,
the output is as follows:
offset1: 00 01 02 03 04 05 ...
offset2：10 11 12 13 14 15 ...
......
We can't get the value of a register directly.
This patch deletes the original separator information and
add tag_len_value information in regs data.
ethtool can parse register data in key-value format by -d command.
a patch will be added to the ethtool to parse regs data
in the following format:
reg1 : value2
reg2 : value2
......
Signed-off-by: Jijie Shao <shaojijie@xxxxxxxxxx>
---
.../hisilicon/hns3/hns3pf/hclge_regs.c | 167 +++++++++++-------
1 file changed, 102 insertions(+), 65 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_regs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_regs.c
index e56644394875..734e5f757b9c 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_regs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_regs.c
@@ -106,12 +106,66 @@ static const enum hclge_opcode_type hclge_dfx_reg_opcode_list[] = {
HCLGE_OPC_DFX_SSU_REG_2
};
-#define MAX_SEPARATE_NUM 4
-#define SEPARATOR_VALUE 0xFDFCFBFA
-#define REG_NUM_PER_LINE 4
-#define REG_LEN_PER_LINE (REG_NUM_PER_LINE * sizeof(u32))
-#define REG_SEPARATOR_LINE 1
-#define REG_NUM_REMAIN_MASK 3
+enum hclge_reg_tag {
+ HCLGE_REG_TAG_CMDQ = 0,
+ HCLGE_REG_TAG_COMMON,
+ HCLGE_REG_TAG_RING,
+ HCLGE_REG_TAG_TQP_INTR,
+ HCLGE_REG_TAG_QUERY_32_BIT,
+ HCLGE_REG_TAG_QUERY_64_BIT,
+ HCLGE_REG_TAG_DFX_BIOS_COMMON,
+ HCLGE_REG_TAG_DFX_SSU_0,
+ HCLGE_REG_TAG_DFX_SSU_1,
+ HCLGE_REG_TAG_DFX_IGU_EGU,
+ HCLGE_REG_TAG_DFX_RPU_0,
+ HCLGE_REG_TAG_DFX_RPU_1,
+ HCLGE_REG_TAG_DFX_NCSI,
+ HCLGE_REG_TAG_DFX_RTC,
+ HCLGE_REG_TAG_DFX_PPP,
+ HCLGE_REG_TAG_DFX_RCB,
+ HCLGE_REG_TAG_DFX_TQP,
+ HCLGE_REG_TAG_DFX_SSU_2,
+};
+
+#pragma pack(4)
+struct hclge_reg_tlv {
+ u16 tag;
+ u16 len;
+};
+
+struct hclge_reg_header {
+ u64 magic_number;
+ u8 is_vf;
+ u8 rsv[7];
+};
+
+#pragma pack()
+
+#define HCLGE_REG_TLV_SIZE sizeof(struct hclge_reg_tlv)
+#define HCLGE_REG_HEADER_SIZE sizeof(struct hclge_reg_header)
+#define HCLGE_REG_TLV_SPACE (sizeof(struct hclge_reg_tlv) / sizeof(u32))
+#define HCLGE_REG_HEADER_SPACE (sizeof(struct hclge_reg_header) / sizeof(u32))
+#define HCLGE_REG_MAGIC_NUMBER 0x686e733372656773 /* meaning is hns3regs */
+
+static u32 hclge_reg_get_header(void *data)
+{
+ struct hclge_reg_header *header = data;
+
+ header->magic_number = HCLGE_REG_MAGIC_NUMBER;
+ header->is_vf = 0x0;
+
+ return HCLGE_REG_HEADER_SPACE;
+}
+
+static u32 hclge_reg_get_tlv(u32 tag, u32 regs_num, void *data)
+{
+ struct hclge_reg_tlv *tlv = data;
+
+ tlv->tag = tag;
+ tlv->len = regs_num * sizeof(u32) + HCLGE_REG_TLV_SIZE;
+
+ return HCLGE_REG_TLV_SPACE;
+}
static int hclge_get_32_bit_regs(struct hclge_dev *hdev, u32 regs_num,
void *data)
@@ -291,31 +345,28 @@ static int hclge_dfx_reg_cmd_send(struct hclge_dev *hdev,
static int hclge_dfx_reg_fetch_data(struct hclge_desc *desc_src, int bd_num,
void *data)
{
- int entries_per_desc, reg_num, separator_num, desc_index, index, i;
+ int entries_per_desc, reg_num, desc_index, index, i;
struct hclge_desc *desc = desc_src;
u32 *reg = data;
entries_per_desc = ARRAY_SIZE(desc->data);
reg_num = entries_per_desc * bd_num;
- separator_num = REG_NUM_PER_LINE - (reg_num & REG_NUM_REMAIN_MASK);
for (i = 0; i < reg_num; i++) {
index = i % entries_per_desc;
desc_index = i / entries_per_desc;
*reg++ = le32_to_cpu(desc[desc_index].data[index]);
}
- for (i = 0; i < separator_num; i++)
- *reg++ = SEPARATOR_VALUE;
- return reg_num + separator_num;
+ return reg_num;
}
static int hclge_get_dfx_reg_len(struct hclge_dev *hdev, int *len)
{
u32 dfx_reg_type_num = ARRAY_SIZE(hclge_dfx_bd_offset_list);
- int data_len_per_desc, bd_num;
+ int data_len_per_desc;
int *bd_num_list;
- u32 data_len, i;
int ret;
+ u32 i;
bd_num_list = kcalloc(dfx_reg_type_num, sizeof(int), GFP_KERNEL);
if (!bd_num_list)
@@ -330,11 +381,8 @@ static int hclge_get_dfx_reg_len(struct hclge_dev *hdev, int *len)
data_len_per_desc = sizeof_field(struct hclge_desc, data);
*len = 0;
- for (i = 0; i < dfx_reg_type_num; i++) {
- bd_num = bd_num_list[i];
- data_len = data_len_per_desc * bd_num;
- *len += (data_len / REG_LEN_PER_LINE + 1) * REG_LEN_PER_LINE;
- }
+ for (i = 0; i < dfx_reg_type_num; i++)
+ *len += bd_num_list[i] * data_len_per_desc + HCLGE_REG_TLV_SIZE;
out:
kfree(bd_num_list);
@@ -383,6 +431,9 @@ static int hclge_get_dfx_reg(struct hclge_dev *hdev, void *data)
break;
}
+ reg += hclge_reg_get_tlv(HCLGE_REG_TAG_DFX_BIOS_COMMON + i,
+ ARRAY_SIZE(desc_src->data) * bd_num,
+ reg);
reg += hclge_dfx_reg_fetch_data(desc_src, bd_num, reg);
}
@@ -398,50 +449,43 @@ static int hclge_fetch_pf_reg(struct hclge_dev *hdev, void *data,
#define HCLGE_RING_REG_OFFSET 0x200
#define HCLGE_RING_INT_REG_OFFSET 0x4
- int i, j, reg_num, separator_num;
+ int i, j, reg_num;
int data_num_sum;
u32 *reg = data;
/* fetching per-PF registers valus from PF PCIe register space */
reg_num = ARRAY_SIZE(cmdq_reg_addr_list);
- separator_num = MAX_SEPARATE_NUM - (reg_num & REG_NUM_REMAIN_MASK);
+ reg += hclge_reg_get_tlv(HCLGE_REG_TAG_CMDQ, reg_num, reg);
for (i = 0; i < reg_num; i++)
*reg++ = hclge_read_dev(&hdev->hw, cmdq_reg_addr_list[i]);
- for (i = 0; i < separator_num; i++)
- *reg++ = SEPARATOR_VALUE;
- data_num_sum = reg_num + separator_num;
+ data_num_sum = reg_num + HCLGE_REG_TLV_SPACE;
reg_num = ARRAY_SIZE(common_reg_addr_list);
- separator_num = MAX_SEPARATE_NUM - (reg_num & REG_NUM_REMAIN_MASK);
+ reg += hclge_reg_get_tlv(HCLGE_REG_TAG_COMMON, reg_num, reg);
for (i = 0; i < reg_num; i++)
*reg++ = hclge_read_dev(&hdev->hw, common_reg_addr_list[i]);
- for (i = 0; i < separator_num; i++)
- *reg++ = SEPARATOR_VALUE;
- data_num_sum += reg_num + separator_num;
+ data_num_sum += reg_num + HCLGE_REG_TLV_SPACE;
reg_num = ARRAY_SIZE(ring_reg_addr_list);
- separator_num = MAX_SEPARATE_NUM - (reg_num & REG_NUM_REMAIN_MASK);
for (j = 0; j < kinfo->num_tqps; j++) {
+ reg += hclge_reg_get_tlv(HCLGE_REG_TAG_RING, reg_num, reg);
for (i = 0; i < reg_num; i++)
*reg++ = hclge_read_dev(&hdev->hw,
ring_reg_addr_list[i] +
HCLGE_RING_REG_OFFSET * j);
- for (i = 0; i < separator_num; i++)
- *reg++ = SEPARATOR_VALUE;
}
- data_num_sum += (reg_num + separator_num) * kinfo->num_tqps;
+ data_num_sum += (reg_num + HCLGE_REG_TLV_SPACE) * kinfo->num_tqps;
reg_num = ARRAY_SIZE(tqp_intr_reg_addr_list);
- separator_num = MAX_SEPARATE_NUM - (reg_num & REG_NUM_REMAIN_MASK);
for (j = 0; j < hdev->num_msi_used - 1; j++) {
+ reg += hclge_reg_get_tlv(HCLGE_REG_TAG_TQP_INTR, reg_num, reg);
for (i = 0; i < reg_num; i++)
*reg++ = hclge_read_dev(&hdev->hw,
tqp_intr_reg_addr_list[i] +
HCLGE_RING_INT_REG_OFFSET * j);
- for (i = 0; i < separator_num; i++)
- *reg++ = SEPARATOR_VALUE;
}
- data_num_sum += (reg_num + separator_num) * (hdev->num_msi_used - 1);
+ data_num_sum += (reg_num + HCLGE_REG_TLV_SPACE) *
+ (hdev->num_msi_used - 1);
return data_num_sum;
}
@@ -473,12 +517,12 @@ static int hclge_get_regs_num(struct hclge_dev *hdev, u32 *regs_num_32_bit,
int hclge_get_regs_len(struct hnae3_handle *handle)
{
- int cmdq_lines, common_lines, ring_lines, tqp_intr_lines;
struct hnae3_knic_private_info *kinfo = &handle->kinfo;
struct hclge_vport *vport = hclge_get_vport(handle);
- struct hclge_dev *hdev = vport->back;
int regs_num_32_bit, regs_num_64_bit, dfx_regs_len;
- int regs_lines_32_bit, regs_lines_64_bit;
+ int cmdq_len, common_len, ring_len, tqp_intr_len;
+ int regs_len_32_bit, regs_len_64_bit;
+ struct hclge_dev *hdev = vport->back;
int ret;
ret = hclge_get_regs_num(hdev, ®s_num_32_bit, ®s_num_64_bit);
@@ -495,22 +539,17 @@ int hclge_get_regs_len(struct hnae3_handle *handle)
return ret;
}
- cmdq_lines = sizeof(cmdq_reg_addr_list) / REG_LEN_PER_LINE +
- REG_SEPARATOR_LINE;
- common_lines = sizeof(common_reg_addr_list) / REG_LEN_PER_LINE +
- REG_SEPARATOR_LINE;
- ring_lines = sizeof(ring_reg_addr_list) / REG_LEN_PER_LINE +
- REG_SEPARATOR_LINE;
- tqp_intr_lines = sizeof(tqp_intr_reg_addr_list) / REG_LEN_PER_LINE +
- REG_SEPARATOR_LINE;
- regs_lines_32_bit = regs_num_32_bit * sizeof(u32) / REG_LEN_PER_LINE +
- REG_SEPARATOR_LINE;
- regs_lines_64_bit = regs_num_64_bit * sizeof(u64) / REG_LEN_PER_LINE +
- REG_SEPARATOR_LINE;
-
- return (cmdq_lines + common_lines + ring_lines * kinfo->num_tqps +
- tqp_intr_lines * (hdev->num_msi_used - 1) + regs_lines_32_bit +
- regs_lines_64_bit) * REG_LEN_PER_LINE + dfx_regs_len;
+ cmdq_len = HCLGE_REG_TLV_SIZE + sizeof(cmdq_reg_addr_list);
+ common_len = HCLGE_REG_TLV_SIZE + sizeof(common_reg_addr_list);
+ ring_len = HCLGE_REG_TLV_SIZE + sizeof(ring_reg_addr_list);
+ tqp_intr_len = HCLGE_REG_TLV_SIZE + sizeof(tqp_intr_reg_addr_list);
+ regs_len_32_bit = HCLGE_REG_TLV_SIZE + regs_num_32_bit * sizeof(u32);
+ regs_len_64_bit = HCLGE_REG_TLV_SIZE + regs_num_64_bit * sizeof(u64);
+
+ /* return the total length of all register values */
+ return HCLGE_REG_HEADER_SIZE + cmdq_len + common_len + ring_len *
+ kinfo->num_tqps + tqp_intr_len * (hdev->num_msi_used - 1) +
+ regs_len_32_bit + regs_len_64_bit + dfx_regs_len;
}
void hclge_get_regs(struct hnae3_handle *handle, u32 *version,
@@ -522,8 +561,8 @@ void hclge_get_regs(struct hnae3_handle *handle, u32 *version,
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
u32 regs_num_32_bit, regs_num_64_bit;
- int i, reg_num, separator_num, ret;
u32 *reg = data;
+ int ret;
*version = hdev->fw_version;
@@ -534,31 +573,29 @@ void hclge_get_regs(struct hnae3_handle *handle, u32 *version,
return;
}
+ reg += hclge_reg_get_header(reg);
reg += hclge_fetch_pf_reg(hdev, reg, kinfo);
+ reg += hclge_reg_get_tlv(HCLGE_REG_TAG_QUERY_32_BIT,
+ regs_num_32_bit, reg);
ret = hclge_get_32_bit_regs(hdev, regs_num_32_bit, reg);
if (ret) {
dev_err(&hdev->pdev->dev,
"Get 32 bit register failed, ret = %d.\n", ret);
return;
}
- reg_num = regs_num_32_bit;
- reg += reg_num;
- separator_num = MAX_SEPARATE_NUM - (reg_num & REG_NUM_REMAIN_MASK);
- for (i = 0; i < separator_num; i++)
- *reg++ = SEPARATOR_VALUE;
+ reg += regs_num_32_bit;
+ reg += hclge_reg_get_tlv(HCLGE_REG_TAG_QUERY_64_BIT,
+ regs_num_64_bit *
+ HCLGE_REG_64_BIT_SPACE_MULTIPLE, reg);
ret = hclge_get_64_bit_regs(hdev, regs_num_64_bit, reg);
if (ret) {
dev_err(&hdev->pdev->dev,
"Get 64 bit register failed, ret = %d.\n", ret);
return;
}
- reg_num = regs_num_64_bit * HCLGE_REG_64_BIT_SPACE_MULTIPLE;
- reg += reg_num;
- separator_num = MAX_SEPARATE_NUM - (reg_num & REG_NUM_REMAIN_MASK);
- for (i = 0; i < separator_num; i++)
- *reg++ = SEPARATOR_VALUE;
+ reg += regs_num_64_bit * HCLGE_REG_64_BIT_SPACE_MULTIPLE;
ret = hclge_get_dfx_reg(hdev, reg);
if (ret)
--
2.30.0