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path: root/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
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Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/t4_hw.c')
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/t4_hw.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 1abdfa123c6c..ee394dc68303 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -4459,6 +4459,59 @@ int cxgb4_t4_bar2_sge_qregs(struct adapter *adapter,
}
/**
+ * t4_init_devlog_params - initialize adapter->params.devlog
+ * @adap: the adapter
+ *
+ * Initialize various fields of the adapter's Firmware Device Log
+ * Parameters structure.
+ */
+int t4_init_devlog_params(struct adapter *adap)
+{
+ struct devlog_params *dparams = &adap->params.devlog;
+ u32 pf_dparams;
+ unsigned int devlog_meminfo;
+ struct fw_devlog_cmd devlog_cmd;
+ int ret;
+
+ /* If we're dealing with newer firmware, the Device Log Paramerters
+ * are stored in a designated register which allows us to access the
+ * Device Log even if we can't talk to the firmware.
+ */
+ pf_dparams =
+ t4_read_reg(adap, PCIE_FW_REG(PCIE_FW_PF_A, PCIE_FW_PF_DEVLOG));
+ if (pf_dparams) {
+ unsigned int nentries, nentries128;
+
+ dparams->memtype = PCIE_FW_PF_DEVLOG_MEMTYPE_G(pf_dparams);
+ dparams->start = PCIE_FW_PF_DEVLOG_ADDR16_G(pf_dparams) << 4;
+
+ nentries128 = PCIE_FW_PF_DEVLOG_NENTRIES128_G(pf_dparams);
+ nentries = (nentries128 + 1) * 128;
+ dparams->size = nentries * sizeof(struct fw_devlog_e);
+
+ return 0;
+ }
+
+ /* Otherwise, ask the firmware for it's Device Log Parameters.
+ */
+ memset(&devlog_cmd, 0, sizeof(devlog_cmd));
+ devlog_cmd.op_to_write = htonl(FW_CMD_OP_V(FW_DEVLOG_CMD) |
+ FW_CMD_REQUEST_F | FW_CMD_READ_F);
+ devlog_cmd.retval_len16 = htonl(FW_LEN16(devlog_cmd));
+ ret = t4_wr_mbox(adap, adap->mbox, &devlog_cmd, sizeof(devlog_cmd),
+ &devlog_cmd);
+ if (ret)
+ return ret;
+
+ devlog_meminfo = ntohl(devlog_cmd.memtype_devlog_memaddr16_devlog);
+ dparams->memtype = FW_DEVLOG_CMD_MEMTYPE_DEVLOG_G(devlog_meminfo);
+ dparams->start = FW_DEVLOG_CMD_MEMADDR16_DEVLOG_G(devlog_meminfo) << 4;
+ dparams->size = ntohl(devlog_cmd.memsize_devlog);
+
+ return 0;
+}
+
+/**
* t4_init_sge_params - initialize adap->params.sge
* @adapter: the adapter
*