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Date: Wed, 16 Nov 2011 17:32:43 +0530
From: Padmanabh Ratnakar <padmanabh.ratnakar@...lex.com>
To: <netdev@...r.kernel.org>
CC: Padmanabh Ratnakar <padmanabh.ratnakar@...lex.com>
Subject: [PATCH net-next 2/5] be2net: add register dump feature for Lancer
Implement register dump using ethtool for Lancer.
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@...lex.com>
---
drivers/net/ethernet/emulex/benet/be_cmds.c | 47 +++++++++++++++
drivers/net/ethernet/emulex/benet/be_cmds.h | 34 +++++++++++
drivers/net/ethernet/emulex/benet/be_ethtool.c | 74 ++++++++++++++++++++++-
3 files changed, 151 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c
index d35a214..1522065 100644
--- a/drivers/net/ethernet/emulex/benet/be_cmds.c
+++ b/drivers/net/ethernet/emulex/benet/be_cmds.c
@@ -1828,6 +1828,53 @@ err_unlock:
return status;
}
+int lancer_cmd_read_object(struct be_adapter *adapter, struct be_dma_mem *cmd,
+ u32 data_size, u32 data_offset, const char *obj_name,
+ u32 *data_read, u32 *eof, u8 *addn_status)
+{
+ struct be_mcc_wrb *wrb;
+ struct lancer_cmd_req_read_object *req;
+ struct lancer_cmd_resp_read_object *resp;
+ int status;
+
+ spin_lock_bh(&adapter->mcc_lock);
+
+ wrb = wrb_from_mccq(adapter);
+ if (!wrb) {
+ status = -EBUSY;
+ goto err_unlock;
+ }
+
+ req = embedded_payload(wrb);
+
+ be_wrb_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
+ OPCODE_COMMON_READ_OBJECT,
+ sizeof(struct lancer_cmd_req_read_object), wrb,
+ NULL);
+
+ req->desired_read_len = cpu_to_le32(data_size);
+ req->read_offset = cpu_to_le32(data_offset);
+ strcpy(req->object_name, obj_name);
+ req->descriptor_count = cpu_to_le32(1);
+ req->buf_len = cpu_to_le32(data_size);
+ req->addr_low = cpu_to_le32((cmd->dma & 0xFFFFFFFF));
+ req->addr_high = cpu_to_le32(upper_32_bits(cmd->dma));
+
+ status = be_mcc_notify_wait(adapter);
+
+ resp = embedded_payload(wrb);
+ if (!status) {
+ *data_read = le32_to_cpu(resp->actual_read_len);
+ *eof = le32_to_cpu(resp->eof);
+ } else {
+ *addn_status = resp->additional_status;
+ }
+
+err_unlock:
+ spin_unlock_bh(&adapter->mcc_lock);
+ return status;
+}
+
int be_cmd_write_flashrom(struct be_adapter *adapter, struct be_dma_mem *cmd,
u32 flash_type, u32 flash_opcode, u32 buf_size)
{
diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.h b/drivers/net/ethernet/emulex/benet/be_cmds.h
index 0818039..2d3fe6a 100644
--- a/drivers/net/ethernet/emulex/benet/be_cmds.h
+++ b/drivers/net/ethernet/emulex/benet/be_cmds.h
@@ -189,6 +189,7 @@ struct be_mcc_mailbox {
#define OPCODE_COMMON_GET_PHY_DETAILS 102
#define OPCODE_COMMON_SET_DRIVER_FUNCTION_CAP 103
#define OPCODE_COMMON_GET_CNTL_ADDITIONAL_ATTRIBUTES 121
+#define OPCODE_COMMON_READ_OBJECT 171
#define OPCODE_COMMON_WRITE_OBJECT 172
#define OPCODE_ETH_RSS_CONFIG 1
@@ -1161,6 +1162,36 @@ struct lancer_cmd_resp_write_object {
u32 actual_write_len;
};
+/************************ Lancer Read FW info **************/
+#define LANCER_READ_FILE_CHUNK (32*1024)
+#define LANCER_READ_FILE_EOF_MASK 0x80000000
+
+#define LANCER_FW_DUMP_FILE "/dbg/dump.bin"
+
+struct lancer_cmd_req_read_object {
+ struct be_cmd_req_hdr hdr;
+ u32 desired_read_len;
+ u32 read_offset;
+ u8 object_name[104];
+ u32 descriptor_count;
+ u32 buf_len;
+ u32 addr_low;
+ u32 addr_high;
+};
+
+struct lancer_cmd_resp_read_object {
+ u8 opcode;
+ u8 subsystem;
+ u8 rsvd1[2];
+ u8 status;
+ u8 additional_status;
+ u8 rsvd2[2];
+ u32 resp_len;
+ u32 actual_resp_len;
+ u32 actual_read_len;
+ u32 eof;
+};
+
/************************ WOL *******************************/
struct be_cmd_req_acpi_wol_magic_config{
struct be_cmd_req_hdr hdr;
@@ -1480,6 +1511,9 @@ extern int lancer_cmd_write_object(struct be_adapter *adapter,
u32 data_size, u32 data_offset,
const char *obj_name,
u32 *data_written, u8 *addn_status);
+int lancer_cmd_read_object(struct be_adapter *adapter, struct be_dma_mem *cmd,
+ u32 data_size, u32 data_offset, const char *obj_name,
+ u32 *data_read, u32 *eof, u8 *addn_status);
int be_cmd_get_flash_crc(struct be_adapter *adapter, u8 *flashed_crc,
int offset);
extern int be_cmd_enable_magic_wol(struct be_adapter *adapter, u8 *mac,
diff --git a/drivers/net/ethernet/emulex/benet/be_ethtool.c b/drivers/net/ethernet/emulex/benet/be_ethtool.c
index 1ad7a28..1e7252e 100644
--- a/drivers/net/ethernet/emulex/benet/be_ethtool.c
+++ b/drivers/net/ethernet/emulex/benet/be_ethtool.c
@@ -143,15 +143,77 @@ static void be_get_drvinfo(struct net_device *netdev,
drvinfo->eedump_len = 0;
}
+static u32
+lancer_cmd_get_file_len(struct be_adapter *adapter, u8 *file_name)
+{
+ u32 data_read = 0, eof;
+ u8 addn_status;
+ struct be_dma_mem data_len_cmd;
+ int status;
+
+ memset(&data_len_cmd, 0, sizeof(data_len_cmd));
+ /* data_offset and data_size should be 0 to get reg len */
+ status = lancer_cmd_read_object(adapter, &data_len_cmd, 0, 0,
+ file_name, &data_read, &eof, &addn_status);
+
+ return data_read;
+}
+
+static int
+lancer_cmd_read_file(struct be_adapter *adapter, u8 *file_name,
+ u32 buf_len, void *buf)
+{
+ struct be_dma_mem read_cmd;
+ u32 read_len = 0, total_read_len = 0, chunk_size;
+ u32 eof = 0;
+ u8 addn_status;
+ int status = 0;
+
+ read_cmd.size = LANCER_READ_FILE_CHUNK;
+ read_cmd.va = pci_alloc_consistent(adapter->pdev, read_cmd.size,
+ &read_cmd.dma);
+
+ if (!read_cmd.va) {
+ dev_err(&adapter->pdev->dev,
+ "Memory allocation failure while reading dump\n");
+ return -ENOMEM;
+ }
+
+ while ((total_read_len < buf_len) && !eof) {
+ chunk_size = min_t(u32, (buf_len - total_read_len),
+ LANCER_READ_FILE_CHUNK);
+ chunk_size = ALIGN(chunk_size, 4);
+ status = lancer_cmd_read_object(adapter, &read_cmd, chunk_size,
+ total_read_len, file_name, &read_len,
+ &eof, &addn_status);
+ if (!status) {
+ memcpy(buf + total_read_len, read_cmd.va, read_len);
+ total_read_len += read_len;
+ eof &= LANCER_READ_FILE_EOF_MASK;
+ } else {
+ status = -EIO;
+ break;
+ }
+ }
+ pci_free_consistent(adapter->pdev, read_cmd.size, read_cmd.va,
+ read_cmd.dma);
+
+ return status;
+}
+
static int
be_get_reg_len(struct net_device *netdev)
{
struct be_adapter *adapter = netdev_priv(netdev);
u32 log_size = 0;
- if (be_physfn(adapter))
- be_cmd_get_reg_len(adapter, &log_size);
-
+ if (be_physfn(adapter)) {
+ if (lancer_chip(adapter))
+ log_size = lancer_cmd_get_file_len(adapter,
+ LANCER_FW_DUMP_FILE);
+ else
+ be_cmd_get_reg_len(adapter, &log_size);
+ }
return log_size;
}
@@ -162,7 +224,11 @@ be_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *buf)
if (be_physfn(adapter)) {
memset(buf, 0, regs->len);
- be_cmd_get_regs(adapter, regs->len, buf);
+ if (lancer_chip(adapter))
+ lancer_cmd_read_file(adapter, LANCER_FW_DUMP_FILE,
+ regs->len, buf);
+ else
+ be_cmd_get_regs(adapter, regs->len, buf);
}
}
--
1.6.0.2
--
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