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iwlwifi: add dump of RFH
Add support of dumping new RFH instead of FH registers. Signed-off-by: Sara Sharon <sara.sharon@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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@ -1,7 +1,7 @@
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/******************************************************************************
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*
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* Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
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* Copyright(c) 2015 Intel Deutschland GmbH
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* Copyright(c) 2015 - 2016 Intel Deutschland GmbH
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*
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* Portions of this file are derived from the ipw3945 project.
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*
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@ -228,9 +228,117 @@ void iwl_force_nmi(struct iwl_trans *trans)
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}
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IWL_EXPORT_SYMBOL(iwl_force_nmi);
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static const char *get_fh_string(int cmd)
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static const char *get_rfh_string(int cmd)
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{
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#define IWL_CMD(x) case x: return #x
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#define IWL_CMD_MQ(arg, reg, q) { if (arg == reg(q)) return #reg; }
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int i;
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for (i = 0; i < IWL_MAX_RX_HW_QUEUES; i++) {
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IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_BA_LSB, i);
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IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_WIDX, i);
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IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_RIDX, i);
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IWL_CMD_MQ(cmd, RFH_Q_URBD_STTS_WPTR_LSB, i);
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};
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switch (cmd) {
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IWL_CMD(RFH_RXF_DMA_CFG);
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IWL_CMD(RFH_GEN_CFG);
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IWL_CMD(RFH_GEN_STATUS);
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IWL_CMD(FH_TSSR_TX_STATUS_REG);
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IWL_CMD(FH_TSSR_TX_ERROR_REG);
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default:
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return "UNKNOWN";
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}
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#undef IWL_CMD_MQ
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}
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struct reg {
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u32 addr;
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bool is64;
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};
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static int iwl_dump_rfh(struct iwl_trans *trans, char **buf)
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{
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int i, q;
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int num_q = trans->num_rx_queues;
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static const u32 rfh_tbl[] = {
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RFH_RXF_DMA_CFG,
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RFH_GEN_CFG,
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RFH_GEN_STATUS,
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FH_TSSR_TX_STATUS_REG,
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FH_TSSR_TX_ERROR_REG,
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};
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static const struct reg rfh_mq_tbl[] = {
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{ RFH_Q0_FRBDCB_BA_LSB, true },
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{ RFH_Q0_FRBDCB_WIDX, false },
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{ RFH_Q0_FRBDCB_RIDX, false },
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{ RFH_Q0_URBD_STTS_WPTR_LSB, true },
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};
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#ifdef CONFIG_IWLWIFI_DEBUGFS
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if (buf) {
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int pos = 0;
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/*
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* Register (up to 34 for name + 8 blank/q for MQ): 40 chars
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* Colon + space: 2 characters
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* 0X%08x: 10 characters
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* New line: 1 character
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* Total of 53 characters
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*/
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size_t bufsz = ARRAY_SIZE(rfh_tbl) * 53 +
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ARRAY_SIZE(rfh_mq_tbl) * 53 * num_q + 40;
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*buf = kmalloc(bufsz, GFP_KERNEL);
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if (!*buf)
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return -ENOMEM;
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pos += scnprintf(*buf + pos, bufsz - pos,
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"RFH register values:\n");
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for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)
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pos += scnprintf(*buf + pos, bufsz - pos,
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"%40s: 0X%08x\n",
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get_rfh_string(rfh_tbl[i]),
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iwl_read_prph(trans, rfh_tbl[i]));
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for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)
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for (q = 0; q < num_q; q++) {
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u32 addr = rfh_mq_tbl[i].addr;
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addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);
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pos += scnprintf(*buf + pos, bufsz - pos,
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"%34s(q %2d): 0X%08x\n",
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get_rfh_string(addr), q,
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iwl_read_prph(trans, addr));
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}
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return pos;
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}
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#endif
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IWL_ERR(trans, "RFH register values:\n");
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for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)
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IWL_ERR(trans, " %34s: 0X%08x\n",
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get_rfh_string(rfh_tbl[i]),
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iwl_read_prph(trans, rfh_tbl[i]));
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for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)
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for (q = 0; q < num_q; q++) {
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u32 addr = rfh_mq_tbl[i].addr;
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addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);
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IWL_ERR(trans, " %34s(q %d): 0X%08x\n",
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get_rfh_string(addr), q,
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iwl_read_prph(trans, addr));
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}
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return 0;
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}
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static const char *get_fh_string(int cmd)
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{
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switch (cmd) {
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IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
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IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
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@ -262,6 +370,9 @@ int iwl_dump_fh(struct iwl_trans *trans, char **buf)
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FH_TSSR_TX_ERROR_REG
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};
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if (trans->cfg->mq_rx_supported)
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return iwl_dump_rfh(trans, buf);
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#ifdef CONFIG_IWLWIFI_DEBUGFS
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if (buf) {
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int pos = 0;
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