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iwmc3200wifi: New initial LMAC calibration

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The LMAC calibration API got broken mostly by having a configuration bitmap
being different than the result one.
This patch tries to address that issue by correctly running calibrations with
the newest firmwares, and keeping a backward compatibility fallback path for
older firmwares, where the configuration and result bitmaps were identical.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Samuel Ortiz 2009-09-01 15:14:04 +02:00 • committed by John W. Linville
parent 31452420ca
commit d04bd6283c
4 changed files with 61 additions and 18 deletions
drivers/net/wireless/iwmc3200wifi
fw.ciwm.hlmac.hmain.c

56
drivers/net/wireless/iwmc3200wifi/fw.c
View file

@ -261,6 +261,33 @@ static int iwm_load_lmac(struct iwm_priv *iwm, const char *img_name)
cpu_to_le32(UMAC_RST_CTRL_FLG_LARC_CLK_EN), 0);
}
static int iwm_init_calib(struct iwm_priv *iwm, unsigned long cfg_bitmap,
unsigned long expected_bitmap, u8 rx_iq_cmd)
{
/* Read RX IQ calibration result from EEPROM */
if (test_bit(rx_iq_cmd, &cfg_bitmap)) {
iwm_store_rxiq_calib_result(iwm);
set_bit(PHY_CALIBRATE_RX_IQ_CMD, &iwm->calib_done_map);
}
iwm_send_prio_table(iwm);
iwm_send_init_calib_cfg(iwm, cfg_bitmap);
while (iwm->calib_done_map != expected_bitmap) {
if (iwm_notif_handle(iwm, CALIBRATION_RES_NOTIFICATION,
IWM_SRC_LMAC, WAIT_NOTIF_TIMEOUT)) {
IWM_DBG_FW(iwm, DBG, "Initial calibration timeout\n");
return -ETIMEDOUT;
}
IWM_DBG_FW(iwm, DBG, "Got calibration result. calib_done_map: "
"0x%lx, expected calibrations: 0x%lx\n",
iwm->calib_done_map, expected_bitmap);
}
return 0;
}
/*
* We currently have to load 3 FWs:
* 1) The UMAC (Upper MAC).
@ -276,6 +303,7 @@ static int iwm_load_lmac(struct iwm_priv *iwm, const char *img_name)
int iwm_load_fw(struct iwm_priv *iwm)
{
unsigned long init_calib_map, periodic_calib_map;
unsigned long expected_calib_map;
int ret;
/* We first start downloading the UMAC */
@ -317,27 +345,21 @@ int iwm_load_fw(struct iwm_priv *iwm)
}
init_calib_map = iwm->conf.calib_map & IWM_CALIB_MAP_INIT_MSK;
expected_calib_map = iwm->conf.expected_calib_map &
IWM_CALIB_MAP_INIT_MSK;
periodic_calib_map = IWM_CALIB_MAP_PER_LMAC(iwm->conf.calib_map);
/* Read RX IQ calibration result from EEPROM */
if (test_bit(PHY_CALIBRATE_RX_IQ_CMD, &init_calib_map)) {
iwm_store_rxiq_calib_result(iwm);
set_bit(PHY_CALIBRATE_RX_IQ_CMD, &iwm->calib_done_map);
}
iwm_send_prio_table(iwm);
iwm_send_init_calib_cfg(iwm, init_calib_map);
while (iwm->calib_done_map != init_calib_map) {
ret = iwm_notif_handle(iwm, CALIBRATION_RES_NOTIFICATION,
IWM_SRC_LMAC, WAIT_NOTIF_TIMEOUT);
if (ret) {
IWM_ERR(iwm, "Wait for calibration result timeout\n");
ret = iwm_init_calib(iwm, init_calib_map, expected_calib_map,
CALIB_CFG_RX_IQ_IDX);
if (ret < 0) {
/* Let's try the old way */
ret = iwm_init_calib(iwm, expected_calib_map,
expected_calib_map,
PHY_CALIBRATE_RX_IQ_CMD);
if (ret < 0) {
IWM_ERR(iwm, "Calibration result timeout\n");
goto out;
}
IWM_DBG_FW(iwm, DBG, "Got calibration result. calib_done_map: "
"0x%lx, requested calibrations: 0x%lx\n",
iwm->calib_done_map, init_calib_map);
}
/* Handle LMAC CALIBRATION_COMPLETE notification */

1
drivers/net/wireless/iwmc3200wifi/iwm.h
View file

@ -64,6 +64,7 @@
struct iwm_conf {
u32 sdio_ior_timeout;
unsigned long calib_map;
unsigned long expected_calib_map;
bool reset_on_fatal_err;
bool auto_connect;
bool wimax_not_present;

15
drivers/net/wireless/iwmc3200wifi/lmac.h
View file

@ -396,9 +396,24 @@ enum {
CALIBRATION_CMD_NUM,
};
enum {
CALIB_CFG_RX_BB_IDX = 0,
CALIB_CFG_DC_IDX = 1,
CALIB_CFG_LO_IDX = 2,
CALIB_CFG_TX_IQ_IDX = 3,
CALIB_CFG_RX_IQ_IDX = 4,
CALIB_CFG_NOISE_IDX = 5,
CALIB_CFG_CRYSTAL_IDX = 6,
CALIB_CFG_TEMPERATURE_IDX = 7,
CALIB_CFG_PAPD_IDX = 8,
CALIB_CFG_LAST_IDX = CALIB_CFG_PAPD_IDX,
CALIB_CFG_MODULE_NUM,
};
#define IWM_CALIB_MAP_INIT_MSK 0xFFFF
#define IWM_CALIB_MAP_PER_LMAC(m) ((m & 0xFF0000) >> 16)
#define IWM_CALIB_MAP_PER_UMAC(m) ((m & 0xFF000000) >> 24)
#define IWM_CALIB_OPCODE_TO_INDEX(op) (op - PHY_CALIBRATE_OPCODES_NUM)
struct iwm_lmac_calib_hdr {
u8 opcode;

7
drivers/net/wireless/iwmc3200wifi/main.c
View file

@ -53,7 +53,12 @@
static struct iwm_conf def_iwm_conf = {
.sdio_ior_timeout = 5000,
.calib_map = BIT(PHY_CALIBRATE_DC_CMD) |
.calib_map = BIT(CALIB_CFG_DC_IDX) |
BIT(CALIB_CFG_LO_IDX) |
BIT(CALIB_CFG_TX_IQ_IDX) |
BIT(CALIB_CFG_RX_IQ_IDX) |
BIT(SHILOH_PHY_CALIBRATE_BASE_BAND_CMD),
.expected_calib_map = BIT(PHY_CALIBRATE_DC_CMD) |
BIT(PHY_CALIBRATE_LO_CMD) |
BIT(PHY_CALIBRATE_TX_IQ_CMD) |
BIT(PHY_CALIBRATE_RX_IQ_CMD) |