diff options
author | Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> | 2018-05-02 15:17:19 +0530 |
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committer | David S. Miller <davem@davemloft.net> | 2018-05-14 13:46:05 -0400 |
commit | 1dde532dd0520a948fbc82f4522183104ee4808b (patch) | |
tree | 33c326162fdade738286b7b48520db15649867e9 /drivers/net/ethernet/chelsio | |
parent | 7efe48df8a3df6d089d2e9a1d429c82cc5dcf2de (diff) | |
download | linux-1dde532dd0520a948fbc82f4522183104ee4808b.tar.bz2 |
cxgb4: collect hardware dump in second kernel
Register callback to collect hardware/firmware dumps in second kernel
before hardware/firmware is initialized. The dumps for each device
will be available as elf notes in /proc/vmcore in second kernel.
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 4 | ||||
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c | 25 | ||||
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.h | 3 | ||||
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 10 |
4 files changed, 42 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h index 688f95440af2..01e7aad4ce5b 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h @@ -50,6 +50,7 @@ #include <linux/net_tstamp.h> #include <linux/ptp_clock_kernel.h> #include <linux/ptp_classify.h> +#include <linux/crash_dump.h> #include <asm/io.h> #include "t4_chip_type.h" #include "cxgb4_uld.h" @@ -964,6 +965,9 @@ struct adapter { struct hma_data hma; struct srq_data *srq; + + /* Dump buffer for collecting logs in kdump kernel */ + struct vmcoredd_data vmcoredd; }; /* Support for "sched-class" command to allow a TX Scheduling Class to be diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c index 143686c60234..085691eb2b95 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c @@ -488,3 +488,28 @@ void cxgb4_init_ethtool_dump(struct adapter *adapter) adapter->eth_dump.version = adapter->params.fw_vers; adapter->eth_dump.len = 0; } + +static int cxgb4_cudbg_vmcoredd_collect(struct vmcoredd_data *data, void *buf) +{ + struct adapter *adap = container_of(data, struct adapter, vmcoredd); + u32 len = data->size; + + return cxgb4_cudbg_collect(adap, buf, &len, CXGB4_ETH_DUMP_ALL); +} + +int cxgb4_cudbg_vmcore_add_dump(struct adapter *adap) +{ + struct vmcoredd_data *data = &adap->vmcoredd; + u32 len; + + len = sizeof(struct cudbg_hdr) + + sizeof(struct cudbg_entity_hdr) * CUDBG_MAX_ENTITY; + len += CUDBG_DUMP_BUFF_SIZE; + + data->size = len; + snprintf(data->dump_name, sizeof(data->dump_name), "%s_%s", + cxgb4_driver_name, adap->name); + data->vmcoredd_callback = cxgb4_cudbg_vmcoredd_collect; + + return vmcore_add_device_dump(data); +} diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.h index ce1ac9a1c878..ef59ba1ed968 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.h @@ -41,8 +41,11 @@ enum CXGB4_ETHTOOL_DUMP_FLAGS { CXGB4_ETH_DUMP_HW = (1 << 1), /* various FW and HW dumps */ }; +#define CXGB4_ETH_DUMP_ALL (CXGB4_ETH_DUMP_MEM | CXGB4_ETH_DUMP_HW) + u32 cxgb4_get_dump_length(struct adapter *adap, u32 flag); int cxgb4_cudbg_collect(struct adapter *adap, void *buf, u32 *buf_size, u32 flag); void cxgb4_init_ethtool_dump(struct adapter *adapter); +int cxgb4_cudbg_vmcore_add_dump(struct adapter *adap); #endif /* __CXGB4_CUDBG_H__ */ diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index c54fd189d835..07baa5e1a8c5 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -5558,6 +5558,16 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) goto out_free_adapter; + if (is_kdump_kernel()) { + /* Collect hardware state and append to /proc/vmcore */ + err = cxgb4_cudbg_vmcore_add_dump(adapter); + if (err) { + dev_warn(adapter->pdev_dev, + "Fail collecting vmcore device dump, err: %d. Continuing\n", + err); + err = 0; + } + } if (!is_t4(adapter->params.chip)) { s_qpp = (QUEUESPERPAGEPF0_S + |