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iwlwifi: yoyo: add the ability to dump phy periphery 

This enables analyzing phy/HW bugs.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201209231351.53bce4f8353d.Ia6944582bd2c748387aaef96755d8919c5d25dc1@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Mordechay Goodstein 2020-12-09 23:16:06 +02:00 committed by Luca Coelho
parent 2f8cfcc43d
commit b34872bc83
2 changed files with 90 additions and 5 deletions
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77
drivers/net/wireless/intel/iwlwifi/fw/dbg.c
View File

@ -1066,9 +1066,10 @@ struct iwl_dump_ini_region_data {
struct iwl_fwrt_dump_data *dump_data;
};
static int iwl_dump_ini_prph_iter(struct iwl_fw_runtime *fwrt,
struct iwl_dump_ini_region_data *reg_data,
void *range_ptr, int idx)
static int
iwl_dump_ini_prph_mac_iter(struct iwl_fw_runtime *fwrt,
struct iwl_dump_ini_region_data *reg_data,
void *range_ptr, int idx)
{
struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
struct iwl_fw_ini_error_dump_range *range = range_ptr;
@ -1090,6 +1091,58 @@ static int iwl_dump_ini_prph_iter(struct iwl_fw_runtime *fwrt,
return sizeof(*range) + le32_to_cpu(range->range_data_size);
}
static int
iwl_dump_ini_prph_phy_iter(struct iwl_fw_runtime *fwrt,
struct iwl_dump_ini_region_data *reg_data,
void *range_ptr, int idx)
{
struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
struct iwl_fw_ini_error_dump_range *range = range_ptr;
__le32 *val = range->data;
u32 indirect_wr_addr = WMAL_INDRCT_RD_CMD1;
u32 indirect_rd_addr = WMAL_MRSPF_1;
u32 prph_val;
u32 addr = le32_to_cpu(reg->addrs[idx]);
u32 dphy_state;
u32 dphy_addr;
unsigned long flags;
int i;
range->internal_base_addr = cpu_to_le32(addr);
range->range_data_size = reg->dev_addr.size;
if (fwrt->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210)
indirect_wr_addr = WMAL_INDRCT_CMD1;
indirect_wr_addr += le32_to_cpu(reg->dev_addr.offset);
indirect_rd_addr += le32_to_cpu(reg->dev_addr.offset);
if (!iwl_trans_grab_nic_access(fwrt->trans, &flags))
return -EBUSY;
dphy_addr = (reg->dev_addr.offset) ? WFPM_LMAC2_PS_CTL_RW :
WFPM_LMAC1_PS_CTL_RW;
dphy_state = iwl_read_umac_prph_no_grab(fwrt->trans, dphy_addr);
for (i = 0; i < le32_to_cpu(reg->dev_addr.size); i += 4) {
if (dphy_state == HBUS_TIMEOUT ||
(dphy_state & WFPM_PS_CTL_RW_PHYRF_PD_FSM_CURSTATE_MSK) !=
WFPM_PHYRF_STATE_ON) {
*val++ = cpu_to_le32(WFPM_DPHY_OFF);
continue;
}
iwl_write_prph_no_grab(fwrt->trans, indirect_wr_addr,
WMAL_INDRCT_CMD(addr + i));
prph_val = iwl_read_prph_no_grab(fwrt->trans,
indirect_rd_addr);
*val++ = cpu_to_le32(prph_val);
}
iwl_trans_release_nic_access(fwrt->trans, &flags);
return sizeof(*range) + le32_to_cpu(range->range_data_size);
}
static int iwl_dump_ini_csr_iter(struct iwl_fw_runtime *fwrt,
struct iwl_dump_ini_region_data *reg_data,
void *range_ptr, int idx)
@ -2152,9 +2205,14 @@ static const struct iwl_dump_ini_mem_ops iwl_dump_ini_region_ops[] = {
.get_num_of_ranges = iwl_dump_ini_mem_ranges,
.get_size = iwl_dump_ini_mem_get_size,
.fill_mem_hdr = iwl_dump_ini_mem_fill_header,
.fill_range = iwl_dump_ini_prph_iter,
.fill_range = iwl_dump_ini_prph_mac_iter,
},
[IWL_FW_INI_REGION_PERIPHERY_PHY] = {
.get_num_of_ranges = iwl_dump_ini_mem_ranges,
.get_size = iwl_dump_ini_mem_get_size,
.fill_mem_hdr = iwl_dump_ini_mem_fill_header,
.fill_range = iwl_dump_ini_prph_phy_iter,
},
[IWL_FW_INI_REGION_PERIPHERY_PHY] = {},
[IWL_FW_INI_REGION_PERIPHERY_AUX] = {},
[IWL_FW_INI_REGION_PAGING] = {
.fill_mem_hdr = iwl_dump_ini_mem_fill_header,
@ -2188,6 +2246,7 @@ static u32 iwl_dump_ini_trigger(struct iwl_fw_runtime *fwrt,
struct list_head *list)
{
struct iwl_fw_ini_trigger_tlv *trigger = dump_data->trig;
enum iwl_fw_ini_time_point tp_id = le32_to_cpu(trigger->time_point);
struct iwl_dump_ini_region_data reg_data = {
.dump_data = dump_data,
};
@ -2218,6 +2277,14 @@ static u32 iwl_dump_ini_trigger(struct iwl_fw_runtime *fwrt,
if (reg_type >= ARRAY_SIZE(iwl_dump_ini_region_ops))
continue;
if (reg_type == IWL_FW_INI_REGION_PERIPHERY_PHY &&
tp_id != IWL_FW_INI_TIME_POINT_FW_ASSERT) {
IWL_WARN(fwrt,
"WRT: trying to collect phy prph at time point: %d, skipping\n",
tp_id);
continue;
}
size += iwl_dump_ini_mem(fwrt, list, &reg_data,
&iwl_dump_ini_region_ops[reg_type]);
}

18
drivers/net/wireless/intel/iwlwifi/iwl-prph.h
View File

@ -473,4 +473,22 @@ enum {
#define IWL_D3_SLEEP_STATUS_SUSPEND 0xD3
#define IWL_D3_SLEEP_STATUS_RESUME 0xD0
#define WMAL_INDRCT_RD_CMD1_OPMOD_POS 28
#define WMAL_INDRCT_RD_CMD1_BYTE_ADDRESS_MSK 0xFFFFF
#define WMAL_CMD_READ_BURST_ACCESS 2
#define WMAL_MRSPF_1 0xADFC20
#define WMAL_INDRCT_RD_CMD1 0xADFD44
#define WMAL_INDRCT_CMD1 0xADFC14
#define WMAL_INDRCT_CMD(addr) \
((WMAL_CMD_READ_BURST_ACCESS << WMAL_INDRCT_RD_CMD1_OPMOD_POS) | \
((addr) & WMAL_INDRCT_RD_CMD1_BYTE_ADDRESS_MSK))
#define WFPM_LMAC1_PS_CTL_RW 0xA03380
#define WFPM_LMAC2_PS_CTL_RW 0xA033C0
#define WFPM_PS_CTL_RW_PHYRF_PD_FSM_CURSTATE_MSK 0x0000000F
#define WFPM_PHYRF_STATE_ON 5
#define HBUS_TIMEOUT 0xA5A5A5A1
#define WFPM_DPHY_OFF 0xDF10FF
#endif /* __iwl_prph_h__ */