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qlcnic: Add capability to take FW dump deterministically 

In presence of multiple functions, current driver implementation does not
guarantee that the FW dump is taken by the same function that forces it.
Change it by adding a fw reset owner flag that could be changed in the device
reset path and only when a function determines that it needs to reset it.

Signed-off-by: Sritej Velaga <sritej.velaga@qlogic.com>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sritej Velaga 2011-06-22 02:52:17 +00:00 committed by David S. Miller
parent 21e842579a
commit 602ca6f00a
3 changed files with 27 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/qlcnic/qlcnic.h
View File

@ -895,6 +895,7 @@ struct qlcnic_ipaddr {
#define QLCNIC_MAC_OVERRIDE_DISABLED 0x400
#define QLCNIC_PROMISC_DISABLED 0x800
#define QLCNIC_NEED_FLR 0x1000
#define QLCNIC_FW_RESET_OWNER 0x2000
#define QLCNIC_IS_MSI_FAMILY(adapter) \
((adapter)->flags & (QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED))

4
drivers/net/qlcnic/qlcnic_ctx.c
View File

@ -95,8 +95,8 @@ int qlcnic_fw_cmd_get_minidump_temp(struct qlcnic_adapter *adapter)
QLCNIC_CDRP_CMD_TEMP_SIZE);
if (err != QLCNIC_RCODE_SUCCESS) {
err = QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
dev_err(&adapter->pdev->dev,
"Failed to get template size %d\n", err);
dev_info(&adapter->pdev->dev,
"Can't get template size %d\n", err);
err = -EIO;
return err;
}

32
drivers/net/qlcnic/qlcnic_main.c
View File

@ -1590,10 +1590,6 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
/* This will be reset for mezz cards */
adapter->portnum = adapter->ahw->pci_func;
/* Get FW dump template and store it */
if (adapter->op_mode != QLCNIC_NON_PRIV_FUNC)
qlcnic_fw_cmd_get_minidump_temp(adapter);
err = qlcnic_get_board_info(adapter);
if (err) {
dev_err(&pdev->dev, "Error getting board config info.\n");
@ -1612,6 +1608,12 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_out_decr_ref;
}
/* Get FW dump template and store it */
if (adapter->op_mode != QLCNIC_NON_PRIV_FUNC)
if (!qlcnic_fw_cmd_get_minidump_temp(adapter))
dev_info(&pdev->dev,
"Supports FW dump capability\n");
if (qlcnic_read_mac_addr(adapter))
dev_warn(&pdev->dev, "failed to read mac addr\n");
@ -2683,11 +2685,16 @@ err:
static int
qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
{
int act, state;
int act, state, active_mask;
state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
act = QLCRD32(adapter, QLCNIC_CRB_DRV_ACTIVE);
if (adapter->flags & QLCNIC_FW_RESET_OWNER) {
active_mask = (~(1 << (adapter->ahw->pci_func * 4)));
act = act & active_mask;
}
if (((state & 0x11111111) == (act & 0x11111111)) ||
((act & 0x11111111) == ((state >> 1) & 0x11111111)))
return 0;
@ -2826,6 +2833,11 @@ qlcnic_fwinit_work(struct work_struct *work)
if (!qlcnic_check_drv_state(adapter)) {
skip_ack_check:
if (!(adapter->flags & QLCNIC_FW_RESET_OWNER)) {
qlcnic_api_unlock(adapter);
goto wait_npar;
}
dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
if (dev_state == QLCNIC_DEV_NEED_RESET) {
@ -2836,6 +2848,7 @@ skip_ack_check:
qlcnic_idc_debug_info(adapter, 0);
QLCDB(adapter, DRV, "Take FW dump\n");
qlcnic_dump_fw(adapter);
adapter->flags &= ~QLCNIC_FW_RESET_OWNER;
}
qlcnic_api_unlock(adapter);
@ -2900,9 +2913,11 @@ qlcnic_detach_work(struct work_struct *work)
if (adapter->temp == QLCNIC_TEMP_PANIC)
goto err_ret;
if (qlcnic_set_drv_state(adapter, adapter->dev_state))
goto err_ret;
/* Dont ack if this instance is the reset owner */
if (!(adapter->flags & QLCNIC_FW_RESET_OWNER)) {
if (qlcnic_set_drv_state(adapter, adapter->dev_state))
goto err_ret;
}
adapter->fw_wait_cnt = 0;
@ -2947,6 +2962,7 @@ qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
if (state == QLCNIC_DEV_READY) {
QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
adapter->flags |= QLCNIC_FW_RESET_OWNER;
QLCDB(adapter, DRV, "NEED_RESET state set\n");
qlcnic_idc_debug_info(adapter, 0);
}