Commit 7afc5dbd authored by Krishna Gudipati's avatar Krishna Gudipati Committed by David S. Miller

bna: Add debugfs interface.

Change details:
	- Add debugfs support to obtain firmware trace, saved firmware trace on
	  an IOC crash, driver info and read/write to registers.

	- debugfs hierarchy:
	  bna/pci_dev:<pci_name>
	  where the pci_name corresponds to the one under /sys/bus/pci/drivers/bna

	- Following are the new debugfs entries added:
	  fwtrc: collect current firmware trace.
	  fwsave: collect last saved fw trace as a result of firmware crash.
	  regwr: write one word to chip register
	  regrd: read one or more words from chip register.
	  drvinfo: collect the driver information.
Signed-off-by: default avatarKrishna Gudipati <kgudipat@brocade.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 72a9730b
...@@ -5,7 +5,7 @@ ...@@ -5,7 +5,7 @@
obj-$(CONFIG_BNA) += bna.o obj-$(CONFIG_BNA) += bna.o
bna-objs := bnad.o bnad_ethtool.o bna_enet.o bna_tx_rx.o bna-objs := bnad.o bnad_ethtool.o bnad_debugfs.o bna_enet.o bna_tx_rx.o
bna-objs += bfa_msgq.o bfa_ioc.o bfa_ioc_ct.o bfa_cee.o bna-objs += bfa_msgq.o bfa_ioc.o bfa_ioc_ct.o bfa_cee.o
bna-objs += cna_fwimg.o bna-objs += cna_fwimg.o
......
...@@ -184,6 +184,41 @@ bfa_nw_cee_mem_claim(struct bfa_cee *cee, u8 *dma_kva, u64 dma_pa) ...@@ -184,6 +184,41 @@ bfa_nw_cee_mem_claim(struct bfa_cee *cee, u8 *dma_kva, u64 dma_pa)
(dma_kva + bfa_cee_attr_meminfo()); (dma_kva + bfa_cee_attr_meminfo());
} }
/**
* bfa_cee_get_attr()
*
* @brief Send the request to the f/w to fetch CEE attributes.
*
* @param[in] Pointer to the CEE module data structure.
*
* @return Status
*/
enum bfa_status
bfa_nw_cee_get_attr(struct bfa_cee *cee, struct bfa_cee_attr *attr,
bfa_cee_get_attr_cbfn_t cbfn, void *cbarg)
{
struct bfi_cee_get_req *cmd;
BUG_ON(!((cee != NULL) && (cee->ioc != NULL)));
if (!bfa_nw_ioc_is_operational(cee->ioc))
return BFA_STATUS_IOC_FAILURE;
if (cee->get_attr_pending == true)
return BFA_STATUS_DEVBUSY;
cee->get_attr_pending = true;
cmd = (struct bfi_cee_get_req *) cee->get_cfg_mb.msg;
cee->attr = attr;
cee->cbfn.get_attr_cbfn = cbfn;
cee->cbfn.get_attr_cbarg = cbarg;
bfi_h2i_set(cmd->mh, BFI_MC_CEE, BFI_CEE_H2I_GET_CFG_REQ,
bfa_ioc_portid(cee->ioc));
bfa_dma_be_addr_set(cmd->dma_addr, cee->attr_dma.pa);
bfa_nw_ioc_mbox_queue(cee->ioc, &cee->get_cfg_mb, NULL, NULL);
return BFA_STATUS_OK;
}
/** /**
* bfa_cee_isrs() * bfa_cee_isrs()
* *
......
...@@ -59,5 +59,7 @@ u32 bfa_nw_cee_meminfo(void); ...@@ -59,5 +59,7 @@ u32 bfa_nw_cee_meminfo(void);
void bfa_nw_cee_mem_claim(struct bfa_cee *cee, u8 *dma_kva, void bfa_nw_cee_mem_claim(struct bfa_cee *cee, u8 *dma_kva,
u64 dma_pa); u64 dma_pa);
void bfa_nw_cee_attach(struct bfa_cee *cee, struct bfa_ioc *ioc, void *dev); void bfa_nw_cee_attach(struct bfa_cee *cee, struct bfa_ioc *ioc, void *dev);
enum bfa_status bfa_nw_cee_get_attr(struct bfa_cee *cee,
struct bfa_cee_attr *attr,
bfa_cee_get_attr_cbfn_t cbfn, void *cbarg);
#endif /* __BFA_CEE_H__ */ #endif /* __BFA_CEE_H__ */
...@@ -74,6 +74,7 @@ static void bfa_ioc_check_attr_wwns(struct bfa_ioc *ioc); ...@@ -74,6 +74,7 @@ static void bfa_ioc_check_attr_wwns(struct bfa_ioc *ioc);
static void bfa_ioc_event_notify(struct bfa_ioc *, enum bfa_ioc_event); static void bfa_ioc_event_notify(struct bfa_ioc *, enum bfa_ioc_event);
static void bfa_ioc_disable_comp(struct bfa_ioc *ioc); static void bfa_ioc_disable_comp(struct bfa_ioc *ioc);
static void bfa_ioc_lpu_stop(struct bfa_ioc *ioc); static void bfa_ioc_lpu_stop(struct bfa_ioc *ioc);
static void bfa_nw_ioc_debug_save_ftrc(struct bfa_ioc *ioc);
static void bfa_ioc_fail_notify(struct bfa_ioc *ioc); static void bfa_ioc_fail_notify(struct bfa_ioc *ioc);
static void bfa_ioc_pf_enabled(struct bfa_ioc *ioc); static void bfa_ioc_pf_enabled(struct bfa_ioc *ioc);
static void bfa_ioc_pf_disabled(struct bfa_ioc *ioc); static void bfa_ioc_pf_disabled(struct bfa_ioc *ioc);
...@@ -997,6 +998,7 @@ bfa_iocpf_sm_disabled(struct bfa_iocpf *iocpf, enum iocpf_event event) ...@@ -997,6 +998,7 @@ bfa_iocpf_sm_disabled(struct bfa_iocpf *iocpf, enum iocpf_event event)
static void static void
bfa_iocpf_sm_initfail_sync_entry(struct bfa_iocpf *iocpf) bfa_iocpf_sm_initfail_sync_entry(struct bfa_iocpf *iocpf)
{ {
bfa_nw_ioc_debug_save_ftrc(iocpf->ioc);
bfa_ioc_hw_sem_get(iocpf->ioc); bfa_ioc_hw_sem_get(iocpf->ioc);
} }
...@@ -1743,6 +1745,114 @@ bfa_ioc_mbox_flush(struct bfa_ioc *ioc) ...@@ -1743,6 +1745,114 @@ bfa_ioc_mbox_flush(struct bfa_ioc *ioc)
bfa_q_deq(&mod->cmd_q, &cmd); bfa_q_deq(&mod->cmd_q, &cmd);
} }
/**
* Read data from SMEM to host through PCI memmap
*
* @param[in] ioc memory for IOC
* @param[in] tbuf app memory to store data from smem
* @param[in] soff smem offset
* @param[in] sz size of smem in bytes
*/
static int
bfa_nw_ioc_smem_read(struct bfa_ioc *ioc, void *tbuf, u32 soff, u32 sz)
{
u32 pgnum, loff, r32;
int i, len;
u32 *buf = tbuf;
pgnum = PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, soff);
loff = PSS_SMEM_PGOFF(soff);
/*
* Hold semaphore to serialize pll init and fwtrc.
*/
if (bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg) == 0)
return 1;
writel(pgnum, ioc->ioc_regs.host_page_num_fn);
len = sz/sizeof(u32);
for (i = 0; i < len; i++) {
r32 = swab32(readl((loff) + (ioc->ioc_regs.smem_page_start)));
buf[i] = be32_to_cpu(r32);
loff += sizeof(u32);
/**
* handle page offset wrap around
*/
loff = PSS_SMEM_PGOFF(loff);
if (loff == 0) {
pgnum++;
writel(pgnum, ioc->ioc_regs.host_page_num_fn);
}
}
writel(PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, 0),
ioc->ioc_regs.host_page_num_fn);
/*
* release semaphore
*/
readl(ioc->ioc_regs.ioc_init_sem_reg);
writel(1, ioc->ioc_regs.ioc_init_sem_reg);
return 0;
}
/**
* Retrieve saved firmware trace from a prior IOC failure.
*/
int
bfa_nw_ioc_debug_fwtrc(struct bfa_ioc *ioc, void *trcdata, int *trclen)
{
u32 loff = BFI_IOC_TRC_OFF + BNA_DBG_FWTRC_LEN * ioc->port_id;
int tlen, status = 0;
tlen = *trclen;
if (tlen > BNA_DBG_FWTRC_LEN)
tlen = BNA_DBG_FWTRC_LEN;
status = bfa_nw_ioc_smem_read(ioc, trcdata, loff, tlen);
*trclen = tlen;
return status;
}
/**
* Save firmware trace if configured.
*/
static void
bfa_nw_ioc_debug_save_ftrc(struct bfa_ioc *ioc)
{
int tlen;
if (ioc->dbg_fwsave_once) {
ioc->dbg_fwsave_once = 0;
if (ioc->dbg_fwsave_len) {
tlen = ioc->dbg_fwsave_len;
bfa_nw_ioc_debug_fwtrc(ioc, ioc->dbg_fwsave, &tlen);
}
}
}
/**
* Retrieve saved firmware trace from a prior IOC failure.
*/
int
bfa_nw_ioc_debug_fwsave(struct bfa_ioc *ioc, void *trcdata, int *trclen)
{
int tlen;
if (ioc->dbg_fwsave_len == 0)
return BFA_STATUS_ENOFSAVE;
tlen = *trclen;
if (tlen > ioc->dbg_fwsave_len)
tlen = ioc->dbg_fwsave_len;
memcpy(trcdata, ioc->dbg_fwsave, tlen);
*trclen = tlen;
return BFA_STATUS_OK;
}
static void static void
bfa_ioc_fail_notify(struct bfa_ioc *ioc) bfa_ioc_fail_notify(struct bfa_ioc *ioc)
{ {
...@@ -1751,6 +1861,7 @@ bfa_ioc_fail_notify(struct bfa_ioc *ioc) ...@@ -1751,6 +1861,7 @@ bfa_ioc_fail_notify(struct bfa_ioc *ioc)
*/ */
ioc->cbfn->hbfail_cbfn(ioc->bfa); ioc->cbfn->hbfail_cbfn(ioc->bfa);
bfa_ioc_event_notify(ioc, BFA_IOC_E_FAILED); bfa_ioc_event_notify(ioc, BFA_IOC_E_FAILED);
bfa_nw_ioc_debug_save_ftrc(ioc);
} }
/** /**
...@@ -2058,6 +2169,16 @@ bfa_nw_ioc_disable(struct bfa_ioc *ioc) ...@@ -2058,6 +2169,16 @@ bfa_nw_ioc_disable(struct bfa_ioc *ioc)
bfa_fsm_send_event(ioc, IOC_E_DISABLE); bfa_fsm_send_event(ioc, IOC_E_DISABLE);
} }
/**
* Initialize memory for saving firmware trace.
*/
void
bfa_nw_ioc_debug_memclaim(struct bfa_ioc *ioc, void *dbg_fwsave)
{
ioc->dbg_fwsave = dbg_fwsave;
ioc->dbg_fwsave_len = ioc->iocpf.auto_recover ? BNA_DBG_FWTRC_LEN : 0;
}
static u32 static u32
bfa_ioc_smem_pgnum(struct bfa_ioc *ioc, u32 fmaddr) bfa_ioc_smem_pgnum(struct bfa_ioc *ioc, u32 fmaddr)
{ {
......
...@@ -27,6 +27,8 @@ ...@@ -27,6 +27,8 @@
#define BFA_IOC_HWSEM_TOV 500 /* msecs */ #define BFA_IOC_HWSEM_TOV 500 /* msecs */
#define BFA_IOC_HB_TOV 500 /* msecs */ #define BFA_IOC_HB_TOV 500 /* msecs */
#define BFA_IOC_POLL_TOV 200 /* msecs */ #define BFA_IOC_POLL_TOV 200 /* msecs */
#define BNA_DBG_FWTRC_LEN (BFI_IOC_TRC_ENTS * BFI_IOC_TRC_ENT_SZ + \
BFI_IOC_TRC_HDR_SZ)
/** /**
* PCI device information required by IOC * PCI device information required by IOC
...@@ -306,6 +308,7 @@ void bfa_nw_ioc_disable(struct bfa_ioc *ioc); ...@@ -306,6 +308,7 @@ void bfa_nw_ioc_disable(struct bfa_ioc *ioc);
void bfa_nw_ioc_error_isr(struct bfa_ioc *ioc); void bfa_nw_ioc_error_isr(struct bfa_ioc *ioc);
bool bfa_nw_ioc_is_disabled(struct bfa_ioc *ioc); bool bfa_nw_ioc_is_disabled(struct bfa_ioc *ioc);
bool bfa_nw_ioc_is_operational(struct bfa_ioc *ioc);
void bfa_nw_ioc_get_attr(struct bfa_ioc *ioc, struct bfa_ioc_attr *ioc_attr); void bfa_nw_ioc_get_attr(struct bfa_ioc *ioc, struct bfa_ioc_attr *ioc_attr);
void bfa_nw_ioc_notify_register(struct bfa_ioc *ioc, void bfa_nw_ioc_notify_register(struct bfa_ioc *ioc,
struct bfa_ioc_notify *notify); struct bfa_ioc_notify *notify);
...@@ -317,6 +320,9 @@ void bfa_nw_ioc_fwver_get(struct bfa_ioc *ioc, ...@@ -317,6 +320,9 @@ void bfa_nw_ioc_fwver_get(struct bfa_ioc *ioc,
bool bfa_nw_ioc_fwver_cmp(struct bfa_ioc *ioc, bool bfa_nw_ioc_fwver_cmp(struct bfa_ioc *ioc,
struct bfi_ioc_image_hdr *fwhdr); struct bfi_ioc_image_hdr *fwhdr);
mac_t bfa_nw_ioc_get_mac(struct bfa_ioc *ioc); mac_t bfa_nw_ioc_get_mac(struct bfa_ioc *ioc);
void bfa_nw_ioc_debug_memclaim(struct bfa_ioc *ioc, void *dbg_fwsave);
int bfa_nw_ioc_debug_fwtrc(struct bfa_ioc *ioc, void *trcdata, int *trclen);
int bfa_nw_ioc_debug_fwsave(struct bfa_ioc *ioc, void *trcdata, int *trclen);
/* /*
* Timeout APIs * Timeout APIs
......
...@@ -257,6 +257,8 @@ struct bfi_ioc_getattr_reply { ...@@ -257,6 +257,8 @@ struct bfi_ioc_getattr_reply {
*/ */
#define BFI_IOC_TRC_OFF (0x4b00) #define BFI_IOC_TRC_OFF (0x4b00)
#define BFI_IOC_TRC_ENTS 256 #define BFI_IOC_TRC_ENTS 256
#define BFI_IOC_TRC_ENT_SZ 16
#define BFI_IOC_TRC_HDR_SZ 32
#define BFI_IOC_FW_SIGNATURE (0xbfadbfad) #define BFI_IOC_FW_SIGNATURE (0xbfadbfad)
#define BFI_IOC_MD5SUM_SZ 4 #define BFI_IOC_MD5SUM_SZ 4
......
...@@ -1727,6 +1727,7 @@ bna_ioceth_init(struct bna_ioceth *ioceth, struct bna *bna, ...@@ -1727,6 +1727,7 @@ bna_ioceth_init(struct bna_ioceth *ioceth, struct bna *bna,
bfa_nw_ioc_mem_claim(&ioceth->ioc, kva, dma); bfa_nw_ioc_mem_claim(&ioceth->ioc, kva, dma);
kva = res_info[BNA_RES_MEM_T_FWTRC].res_u.mem_info.mdl[0].kva; kva = res_info[BNA_RES_MEM_T_FWTRC].res_u.mem_info.mdl[0].kva;
bfa_nw_ioc_debug_memclaim(&ioceth->ioc, kva);
/** /**
* Attach common modules (Diag, SFP, CEE, Port) and claim respective * Attach common modules (Diag, SFP, CEE, Port) and claim respective
...@@ -1910,8 +1911,8 @@ bna_res_req(struct bna_res_info *res_info) ...@@ -1910,8 +1911,8 @@ bna_res_req(struct bna_res_info *res_info)
/* Virtual memory for retreiving fw_trc */ /* Virtual memory for retreiving fw_trc */
res_info[BNA_RES_MEM_T_FWTRC].res_type = BNA_RES_T_MEM; res_info[BNA_RES_MEM_T_FWTRC].res_type = BNA_RES_T_MEM;
res_info[BNA_RES_MEM_T_FWTRC].res_u.mem_info.mem_type = BNA_MEM_T_KVA; res_info[BNA_RES_MEM_T_FWTRC].res_u.mem_info.mem_type = BNA_MEM_T_KVA;
res_info[BNA_RES_MEM_T_FWTRC].res_u.mem_info.num = 0; res_info[BNA_RES_MEM_T_FWTRC].res_u.mem_info.num = 1;
res_info[BNA_RES_MEM_T_FWTRC].res_u.mem_info.len = 0; res_info[BNA_RES_MEM_T_FWTRC].res_u.mem_info.len = BNA_DBG_FWTRC_LEN;
/* DMA memory for retreiving stats */ /* DMA memory for retreiving stats */
res_info[BNA_RES_MEM_T_STATS].res_type = BNA_RES_T_MEM; res_info[BNA_RES_MEM_T_STATS].res_type = BNA_RES_T_MEM;
......
...@@ -44,6 +44,11 @@ static uint bnad_ioc_auto_recover = 1; ...@@ -44,6 +44,11 @@ static uint bnad_ioc_auto_recover = 1;
module_param(bnad_ioc_auto_recover, uint, 0444); module_param(bnad_ioc_auto_recover, uint, 0444);
MODULE_PARM_DESC(bnad_ioc_auto_recover, "Enable / Disable auto recovery"); MODULE_PARM_DESC(bnad_ioc_auto_recover, "Enable / Disable auto recovery");
static uint bna_debugfs_enable = 1;
module_param(bna_debugfs_enable, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(bna_debugfs_enable, "Enables debugfs feature, default=1,"
" Range[false:0|true:1]");
/* /*
* Global variables * Global variables
*/ */
...@@ -3312,6 +3317,10 @@ bnad_pci_probe(struct pci_dev *pdev, ...@@ -3312,6 +3317,10 @@ bnad_pci_probe(struct pci_dev *pdev,
/* Set link to down state */ /* Set link to down state */
netif_carrier_off(netdev); netif_carrier_off(netdev);
/* Setup the debugfs node for this bfad */
if (bna_debugfs_enable)
bnad_debugfs_init(bnad);
/* Get resource requirement form bna */ /* Get resource requirement form bna */
spin_lock_irqsave(&bnad->bna_lock, flags); spin_lock_irqsave(&bnad->bna_lock, flags);
bna_res_req(&bnad->res_info[0]); bna_res_req(&bnad->res_info[0]);
...@@ -3433,6 +3442,9 @@ bnad_pci_probe(struct pci_dev *pdev, ...@@ -3433,6 +3442,9 @@ bnad_pci_probe(struct pci_dev *pdev,
res_free: res_free:
bnad_res_free(bnad, &bnad->res_info[0], BNA_RES_T_MAX); bnad_res_free(bnad, &bnad->res_info[0], BNA_RES_T_MAX);
drv_uninit: drv_uninit:
/* Remove the debugfs node for this bnad */
kfree(bnad->regdata);
bnad_debugfs_uninit(bnad);
bnad_uninit(bnad); bnad_uninit(bnad);
pci_uninit: pci_uninit:
bnad_pci_uninit(pdev); bnad_pci_uninit(pdev);
...@@ -3479,6 +3491,9 @@ bnad_pci_remove(struct pci_dev *pdev) ...@@ -3479,6 +3491,9 @@ bnad_pci_remove(struct pci_dev *pdev)
mutex_unlock(&bnad->conf_mutex); mutex_unlock(&bnad->conf_mutex);
bnad_remove_from_list(bnad); bnad_remove_from_list(bnad);
bnad_lock_uninit(bnad); bnad_lock_uninit(bnad);
/* Remove the debugfs node for this bnad */
kfree(bnad->regdata);
bnad_debugfs_uninit(bnad);
bnad_uninit(bnad); bnad_uninit(bnad);
free_netdev(netdev); free_netdev(netdev);
} }
......
...@@ -328,6 +328,20 @@ struct bnad { ...@@ -328,6 +328,20 @@ struct bnad {
char adapter_name[BNAD_NAME_LEN]; char adapter_name[BNAD_NAME_LEN];
char port_name[BNAD_NAME_LEN]; char port_name[BNAD_NAME_LEN];
char mbox_irq_name[BNAD_NAME_LEN]; char mbox_irq_name[BNAD_NAME_LEN];
/* debugfs specific data */
char *regdata;
u32 reglen;
struct dentry *bnad_dentry_files[5];
struct dentry *port_debugfs_root;
};
struct bnad_drvinfo {
struct bfa_ioc_attr ioc_attr;
struct bfa_cee_attr cee_attr;
struct bfa_flash_attr flash_attr;
u32 cee_status;
u32 flash_status;
}; };
/* /*
...@@ -368,6 +382,10 @@ extern void bnad_netdev_qstats_fill(struct bnad *bnad, ...@@ -368,6 +382,10 @@ extern void bnad_netdev_qstats_fill(struct bnad *bnad,
extern void bnad_netdev_hwstats_fill(struct bnad *bnad, extern void bnad_netdev_hwstats_fill(struct bnad *bnad,
struct rtnl_link_stats64 *stats); struct rtnl_link_stats64 *stats);
/* Debugfs */
void bnad_debugfs_init(struct bnad *bnad);
void bnad_debugfs_uninit(struct bnad *bnad);
/** /**
* MACROS * MACROS
*/ */
......
This diff is collapsed.
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment