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cxgb4: Add pci reset handler 

This patch implements reset_prepare and reset_done, which are used
for handling FLR.

Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vishal Kulkarni 2019-11-05 11:49:15 +05:30 committed by David S. Miller
parent 7b3a768b2b
commit 86e8f29887
1 changed files with 96 additions and 9 deletions
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105
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -184,6 +184,8 @@ static struct dentry *cxgb4_debugfs_root;
LIST_HEAD(adapter_list);
DEFINE_MUTEX(uld_mutex);
static int cfg_queues(struct adapter *adap);
static void link_report(struct net_device *dev)
{
if (!netif_carrier_ok(dev))
@ -4286,14 +4288,14 @@ static struct fw_info *find_fw_info(int chip)
/*
* Phase 0 of initialization: contact FW, obtain config, perform basic init.
*/
static int adap_init0(struct adapter *adap)
static int adap_init0(struct adapter *adap, int vpd_skip)
{
int ret;
u32 v, port_vec;
enum dev_state state;
u32 params[7], val[7];
struct fw_caps_config_cmd caps_cmd;
u32 params[7], val[7];
enum dev_state state;
u32 v, port_vec;
int reset = 1;
int ret;
/* Grab Firmware Device Log parameters as early as possible so we have
* access to it for debugging, etc.
@ -4448,9 +4450,11 @@ static int adap_init0(struct adapter *adap)
* could have FLASHed a new VPD which won't be read by the firmware
* until we do the RESET ...
*/
ret = t4_get_vpd_params(adap, &adap->params.vpd);
if (ret < 0)
goto bye;
if (!vpd_skip) {
ret = t4_get_vpd_params(adap, &adap->params.vpd);
if (ret < 0)
goto bye;
}
/* Find out what ports are available to us. Note that we need to do
* this before calling adap_init0_no_config() since it needs nports
@ -5050,10 +5054,93 @@ static void eeh_resume(struct pci_dev *pdev)
rtnl_unlock();
}
static void eeh_reset_prepare(struct pci_dev *pdev)
{
struct adapter *adapter = pci_get_drvdata(pdev);
int i;
if (adapter->pf != 4)
return;
adapter->flags &= ~CXGB4_FW_OK;
notify_ulds(adapter, CXGB4_STATE_DOWN);
for_each_port(adapter, i)
if (adapter->port[i]->reg_state == NETREG_REGISTERED)
cxgb_close(adapter->port[i]);
disable_interrupts(adapter);
cxgb4_free_mps_ref_entries(adapter);
adap_free_hma_mem(adapter);
if (adapter->flags & CXGB4_FULL_INIT_DONE)
cxgb_down(adapter);
}
static void eeh_reset_done(struct pci_dev *pdev)
{
struct adapter *adapter = pci_get_drvdata(pdev);
int err, i;
if (adapter->pf != 4)
return;
err = t4_wait_dev_ready(adapter->regs);
if (err < 0) {
dev_err(adapter->pdev_dev,
"Device not ready, err %d", err);
return;
}
setup_memwin(adapter);
err = adap_init0(adapter, 1);
if (err) {
dev_err(adapter->pdev_dev,
"Adapter init failed, err %d", err);
return;
}
setup_memwin_rdma(adapter);
if (adapter->flags & CXGB4_FW_OK) {
err = t4_port_init(adapter, adapter->pf, adapter->pf, 0);
if (err) {
dev_err(adapter->pdev_dev,
"Port init failed, err %d", err);
return;
}
}
err = cfg_queues(adapter);
if (err) {
dev_err(adapter->pdev_dev,
"Config queues failed, err %d", err);
return;
}
cxgb4_init_mps_ref_entries(adapter);
err = setup_fw_sge_queues(adapter);
if (err) {
dev_err(adapter->pdev_dev,
"FW sge queue allocation failed, err %d", err);
return;
}
for_each_port(adapter, i)
if (adapter->port[i]->reg_state == NETREG_REGISTERED)
cxgb_open(adapter->port[i]);
}
static const struct pci_error_handlers cxgb4_eeh = {
.error_detected = eeh_err_detected,
.slot_reset = eeh_slot_reset,
.resume = eeh_resume,
.reset_prepare = eeh_reset_prepare,
.reset_done = eeh_reset_done,
};
/* Return true if the Link Configuration supports "High Speeds" (those greater
@ -5837,7 +5924,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
}
setup_memwin(adapter);
err = adap_init0(adapter);
err = adap_init0(adapter, 0);
#ifdef CONFIG_DEBUG_FS
bitmap_zero(adapter->sge.blocked_fl, adapter->sge.egr_sz);
#endif