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| author | Vaibhav Jain <vaibhav@linux.vnet.ibm.com> | 2018-01-08 17:23:05 +0530 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2018-01-14 21:05:51 -0600 |
| commit | 7b613693d537859acfa13968ecfa28082ec8f72f (patch) | |
| tree | 65194c78e601f8ebf691b6a1c349a5ed86010b91 /hw/phb4.c | |
| parent | 4e23b42d2ad76da21422a1d2de471df29f76b8df (diff) | |
| download | skiboot-7b613693d537859acfa13968ecfa28082ec8f72f.zip skiboot-7b613693d537859acfa13968ecfa28082ec8f72f.tar.gz skiboot-7b613693d537859acfa13968ecfa28082ec8f72f.tar.bz2 | |
phb4: Dump CAPP error registers when it asserts link down
This patch introduces a new function phb4_dump_app_err_regs() that
dumps CAPP error registers in case the PEC nestfir register indicates
that the fence was due to a CAPP error (BIT-24).
Contents of these registers are helpful in diagnosing CAPP
issues. Registers that are dumped in phb4_dump_app_err_regs() are:
* CAPP FIR Register
* CAPP APC Master Error Report Register
* CAPP Snoop Error Report Register
* CAPP Transport Error Report Register
* CAPP TLBI Error Report Register
* CAPP Error Status and Control Register
Signed-off-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Reviewed-by: Christophe Lombard<clombard@linux.vnet.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hw/phb4.c')
| -rw-r--r-- | hw/phb4.c | 36 |
1 files changed, 31 insertions, 5 deletions
@@ -2338,6 +2338,28 @@ static void phb4_train_info(struct phb4 *p, uint64_t reg, unsigned long time) PHBERR(p, "%s\n", s); } +static void phb4_dump_capp_err_regs(struct phb4 *p) +{ + uint64_t fir, apc_master_err, snoop_err, transport_err; + uint64_t tlbi_err, capp_err_status; + uint64_t offset = PHB4_CAPP_REG_OFFSET(p); + + xscom_read(p->chip_id, CAPP_FIR + offset, &fir); + xscom_read(p->chip_id, CAPP_APC_MASTER_ERR_RPT + offset, + &apc_master_err); + xscom_read(p->chip_id, CAPP_SNOOP_ERR_RTP + offset, &snoop_err); + xscom_read(p->chip_id, CAPP_TRANSPORT_ERR_RPT + offset, &transport_err); + xscom_read(p->chip_id, CAPP_TLBI_ERR_RPT + offset, &tlbi_err); + xscom_read(p->chip_id, CAPP_ERR_STATUS_CTRL + offset, &capp_err_status); + + PHBERR(p, " CAPP FIR=%016llx\n", fir); + PHBERR(p, "CAPP APC MASTER ERR=%016llx\n", apc_master_err); + PHBERR(p, " CAPP SNOOP ERR=%016llx\n", snoop_err); + PHBERR(p, " CAPP TRANSPORT ERR=%016llx\n", transport_err); + PHBERR(p, " CAPP TLBI ERR=%016llx\n", tlbi_err); + PHBERR(p, " CAPP ERR STATUS=%016llx\n", capp_err_status); +} + /* Check if AIB is fenced via PBCQ NFIR */ static bool phb4_fenced(struct phb4 *p) { @@ -2369,16 +2391,20 @@ static bool phb4_fenced(struct phb4 *p) xscom_read(p->chip_id, p->pci_stk_xscom + XPEC_PCI_STK_PBAIB_ERR_REPORT, &err_aib); - PHBERR(p, " PCI FIR=%016llx\n", nfir_p); - PHBERR(p, "NEST FIR=%016llx\n", nfir_n); - PHBERR(p, "ERR RPT0=%016llx\n", err_rpt0); - PHBERR(p, "ERR RPT1=%016llx\n", err_rpt1); - PHBERR(p, " AIB ERR=%016llx\n", err_aib); + PHBERR(p, " PCI FIR=%016llx\n", nfir_p); + PHBERR(p, " NEST FIR=%016llx\n", nfir_n); + PHBERR(p, " ERR RPT0=%016llx\n", err_rpt0); + PHBERR(p, " ERR RPT1=%016llx\n", err_rpt1); + PHBERR(p, " AIB ERR=%016llx\n", err_aib); /* Mark ourselves fenced */ p->flags |= PHB4_AIB_FENCED; p->state = PHB4_STATE_FENCED; + /* dump capp error registers in case phb was fenced due to capp */ + if (nfir_n & XPEC_NEST_STK_PCI_NFIR_CXA_PE_CAPP) + phb4_dump_capp_err_regs(p); + phb4_eeh_dump_regs(p); return true; |