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be2net: Bug fix to avoid disabling bottom half during firmware upgrade. 

Certain firmware commands/operations to upgrade firmware could take several
seconds to complete. The code presently disables bottom half during these
operations which could lead to unpredictable behaviour in certain cases. This
patch now does all firmware upgrade operations asynchronously using a
completion variable.

Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sarveshwar Bandi 2010-05-25 16:16:32 -07:00 committed by David S. Miller
parent 563b046710
commit dd131e76e5
3 changed files with 20 additions and 2 deletions
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2
drivers/net/benet/be.h
View File

@ -283,6 +283,8 @@ struct be_adapter {
u8 port_type;
u8 transceiver;
u8 generation; /* BladeEngine ASIC generation */
u32 flash_status;
struct completion flash_compl;
bool sriov_enabled;
u32 vf_if_handle[BE_MAX_VF];

19
drivers/net/benet/be_cmds.c
View File

@ -59,6 +59,13 @@ static int be_mcc_compl_process(struct be_adapter *adapter,
compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
CQE_STATUS_COMPL_MASK;
if ((compl->tag0 == OPCODE_COMMON_WRITE_FLASHROM) &&
(compl->tag1 == CMD_SUBSYSTEM_COMMON)) {
adapter->flash_status = compl_status;
complete(&adapter->flash_compl);
}
if (compl_status == MCC_STATUS_SUCCESS) {
if (compl->tag0 == OPCODE_ETH_GET_STATISTICS) {
struct be_cmd_resp_get_stats *resp =
@ -1417,6 +1424,7 @@ int be_cmd_write_flashrom(struct be_adapter *adapter, struct be_dma_mem *cmd,
int status;
spin_lock_bh(&adapter->mcc_lock);
adapter->flash_status = 0;
wrb = wrb_from_mccq(adapter);
if (!wrb) {
@ -1428,6 +1436,7 @@ int be_cmd_write_flashrom(struct be_adapter *adapter, struct be_dma_mem *cmd,
be_wrb_hdr_prepare(wrb, cmd->size, false, 1,
OPCODE_COMMON_WRITE_FLASHROM);
wrb->tag1 = CMD_SUBSYSTEM_COMMON;
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_WRITE_FLASHROM, cmd->size);
@ -1439,10 +1448,16 @@ int be_cmd_write_flashrom(struct be_adapter *adapter, struct be_dma_mem *cmd,
req->params.op_code = cpu_to_le32(flash_opcode);
req->params.data_buf_size = cpu_to_le32(buf_size);
status = be_mcc_notify_wait(adapter);
be_mcc_notify(adapter);
spin_unlock_bh(&adapter->mcc_lock);
if (!wait_for_completion_timeout(&adapter->flash_compl,
msecs_to_jiffies(12000)))
status = -1;
else
status = adapter->flash_status;
err:
spin_unlock_bh(&adapter->mcc_lock);
return status;
}

1
drivers/net/benet/be_main.c
View File

@ -2319,6 +2319,7 @@ static int be_ctrl_init(struct be_adapter *adapter)
spin_lock_init(&adapter->mcc_lock);
spin_lock_init(&adapter->mcc_cq_lock);
init_completion(&adapter->flash_compl);
pci_save_state(adapter->pdev);
return 0;