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linux/drivers/net/wireless/iwlegacy/4965.h
Stanislaw Gruszka 616107ed81 iwlegacy: 4965: small tx_cmd build cleanup 
Get rid of two inline functions related and simplify a bit
rts_retry_limit calculations.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-04 14:30:44 -05:00

1302 lines
50 KiB
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/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#ifndef __il_4965_h__
#define __il_4965_h__
struct il_rx_queue;
struct il_rx_buf;
struct il_rx_pkt;
struct il_tx_queue;
struct il_rxon_context;
/* configuration for the _4965 devices */
extern struct il_cfg il4965_cfg;
extern struct il_mod_params il4965_mod_params;
extern struct ieee80211_ops il4965_hw_ops;
/* tx queue */
void il4965_free_tfds_in_queue(struct il_priv *il, int sta_id, int tid,
int freed);
/* RXON */
void il4965_set_rxon_chain(struct il_priv *il, struct il_rxon_context *ctx);
/* uCode */
int il4965_verify_ucode(struct il_priv *il);
/* lib */
void il4965_check_abort_status(struct il_priv *il, u8 frame_count, u32 status);
void il4965_rx_queue_reset(struct il_priv *il, struct il_rx_queue *rxq);
int il4965_rx_init(struct il_priv *il, struct il_rx_queue *rxq);
int il4965_hw_nic_init(struct il_priv *il);
int il4965_dump_fh(struct il_priv *il, char **buf, bool display);
/* rx */
void il4965_rx_queue_restock(struct il_priv *il);
void il4965_rx_replenish(struct il_priv *il);
void il4965_rx_replenish_now(struct il_priv *il);
void il4965_rx_queue_free(struct il_priv *il, struct il_rx_queue *rxq);
int il4965_rxq_stop(struct il_priv *il);
int il4965_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band);
void il4965_hdl_rx(struct il_priv *il, struct il_rx_buf *rxb);
void il4965_hdl_rx_phy(struct il_priv *il, struct il_rx_buf *rxb);
void il4965_rx_handle(struct il_priv *il);
/* tx */
void il4965_hw_txq_free_tfd(struct il_priv *il, struct il_tx_queue *txq);
int il4965_hw_txq_attach_buf_to_tfd(struct il_priv *il, struct il_tx_queue *txq,
dma_addr_t addr, u16 len, u8 reset, u8 pad);
int il4965_hw_tx_queue_init(struct il_priv *il, struct il_tx_queue *txq);
void il4965_hwrate_to_tx_control(struct il_priv *il, u32 rate_n_flags,
struct ieee80211_tx_info *info);
int il4965_tx_skb(struct il_priv *il, struct sk_buff *skb);
int il4965_tx_agg_start(struct il_priv *il, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid, u16 * ssn);
int il4965_tx_agg_stop(struct il_priv *il, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid);
int il4965_txq_check_empty(struct il_priv *il, int sta_id, u8 tid, int txq_id);
void il4965_hdl_compressed_ba(struct il_priv *il, struct il_rx_buf *rxb);
int il4965_tx_queue_reclaim(struct il_priv *il, int txq_id, int idx);
void il4965_hw_txq_ctx_free(struct il_priv *il);
int il4965_txq_ctx_alloc(struct il_priv *il);
void il4965_txq_ctx_reset(struct il_priv *il);
void il4965_txq_ctx_stop(struct il_priv *il);
void il4965_txq_set_sched(struct il_priv *il, u32 mask);
/*
* Acquire il->lock before calling this function !
*/
void il4965_set_wr_ptrs(struct il_priv *il, int txq_id, u32 idx);
/**
* il4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
* @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
* @scd_retry: (1) Indicates queue will be used in aggregation mode
*
* NOTE: Acquire il->lock before calling this function !
*/
void il4965_tx_queue_set_status(struct il_priv *il, struct il_tx_queue *txq,
int tx_fifo_id, int scd_retry);
/* rx */
void il4965_hdl_missed_beacon(struct il_priv *il, struct il_rx_buf *rxb);
bool il4965_good_plcp_health(struct il_priv *il, struct il_rx_pkt *pkt);
void il4965_hdl_stats(struct il_priv *il, struct il_rx_buf *rxb);
void il4965_hdl_c_stats(struct il_priv *il, struct il_rx_buf *rxb);
/* scan */
int il4965_request_scan(struct il_priv *il, struct ieee80211_vif *vif);
/* station mgmt */
int il4965_manage_ibss_station(struct il_priv *il, struct ieee80211_vif *vif,
bool add);
/* hcmd */
int il4965_send_beacon_cmd(struct il_priv *il);
#ifdef CONFIG_IWLEGACY_DEBUG
const char *il4965_get_tx_fail_reason(u32 status);
#else
static inline const char *
il4965_get_tx_fail_reason(u32 status)
{
return "";
}
#endif
/* station management */
int il4965_alloc_bcast_station(struct il_priv *il, struct il_rxon_context *ctx);
int il4965_add_bssid_station(struct il_priv *il, struct il_rxon_context *ctx,
const u8 *addr, u8 *sta_id_r);
int il4965_remove_default_wep_key(struct il_priv *il,
struct il_rxon_context *ctx,
struct ieee80211_key_conf *key);
int il4965_set_default_wep_key(struct il_priv *il, struct il_rxon_context *ctx,
struct ieee80211_key_conf *key);
int il4965_restore_default_wep_keys(struct il_priv *il,
struct il_rxon_context *ctx);
int il4965_set_dynamic_key(struct il_priv *il, struct il_rxon_context *ctx,
struct ieee80211_key_conf *key, u8 sta_id);
int il4965_remove_dynamic_key(struct il_priv *il, struct il_rxon_context *ctx,
struct ieee80211_key_conf *key, u8 sta_id);
void il4965_update_tkip_key(struct il_priv *il, struct il_rxon_context *ctx,
struct ieee80211_key_conf *keyconf,
struct ieee80211_sta *sta, u32 iv32,
u16 *phase1key);
int il4965_sta_tx_modify_enable_tid(struct il_priv *il, int sta_id, int tid);
int il4965_sta_rx_agg_start(struct il_priv *il, struct ieee80211_sta *sta,
int tid, u16 ssn);
int il4965_sta_rx_agg_stop(struct il_priv *il, struct ieee80211_sta *sta,
int tid);
void il4965_sta_modify_sleep_tx_count(struct il_priv *il, int sta_id, int cnt);
int il4965_update_bcast_stations(struct il_priv *il);
/* rate */
static inline u8
il4965_hw_get_rate(__le32 rate_n_flags)
{
return le32_to_cpu(rate_n_flags) & 0xFF;
}
/* eeprom */
void il4965_eeprom_get_mac(const struct il_priv *il, u8 * mac);
int il4965_eeprom_acquire_semaphore(struct il_priv *il);
void il4965_eeprom_release_semaphore(struct il_priv *il);
int il4965_eeprom_check_version(struct il_priv *il);
/* mac80211 handlers (for 4965) */
void il4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
int il4965_mac_start(struct ieee80211_hw *hw);
void il4965_mac_stop(struct ieee80211_hw *hw);
void il4965_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags, u64 multicast);
int il4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
struct ieee80211_vif *vif, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key);
void il4965_mac_update_tkip_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_key_conf *keyconf,
struct ieee80211_sta *sta, u32 iv32,
u16 *phase1key);
int il4965_mac_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid, u16 * ssn,
u8 buf_size);
int il4965_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
void il4965_mac_channel_switch(struct ieee80211_hw *hw,
struct ieee80211_channel_switch *ch_switch);
void il4965_led_enable(struct il_priv *il);
/* EEPROM */
#define IL4965_EEPROM_IMG_SIZE 1024
/*
* uCode queue management definitions ...
* The first queue used for block-ack aggregation is #7 (4965 only).
* All block-ack aggregation queues should map to Tx DMA/FIFO channel 7.
*/
#define IL49_FIRST_AMPDU_QUEUE 7
/* Sizes and addresses for instruction and data memory (SRAM) in
* 4965's embedded processor. Driver access is via HBUS_TARG_MEM_* regs. */
#define IL49_RTC_INST_LOWER_BOUND (0x000000)
#define IL49_RTC_INST_UPPER_BOUND (0x018000)
#define IL49_RTC_DATA_LOWER_BOUND (0x800000)
#define IL49_RTC_DATA_UPPER_BOUND (0x80A000)
#define IL49_RTC_INST_SIZE (IL49_RTC_INST_UPPER_BOUND - \
IL49_RTC_INST_LOWER_BOUND)
#define IL49_RTC_DATA_SIZE (IL49_RTC_DATA_UPPER_BOUND - \
IL49_RTC_DATA_LOWER_BOUND)
#define IL49_MAX_INST_SIZE IL49_RTC_INST_SIZE
#define IL49_MAX_DATA_SIZE IL49_RTC_DATA_SIZE
/* Size of uCode instruction memory in bootstrap state machine */
#define IL49_MAX_BSM_SIZE BSM_SRAM_SIZE
static inline int
il4965_hw_valid_rtc_data_addr(u32 addr)
{
return (addr >= IL49_RTC_DATA_LOWER_BOUND &&
addr < IL49_RTC_DATA_UPPER_BOUND);
}
/********************* START TEMPERATURE *************************************/
/**
* 4965 temperature calculation.
*
* The driver must calculate the device temperature before calculating
* a txpower setting (amplifier gain is temperature dependent). The
* calculation uses 4 measurements, 3 of which (R1, R2, R3) are calibration
* values used for the life of the driver, and one of which (R4) is the
* real-time temperature indicator.
*
* uCode provides all 4 values to the driver via the "initialize alive"
* notification (see struct il4965_init_alive_resp). After the runtime uCode
* image loads, uCode updates the R4 value via stats notifications
* (see N_STATS), which occur after each received beacon
* when associated, or can be requested via C_STATS.
*
* NOTE: uCode provides the R4 value as a 23-bit signed value. Driver
* must sign-extend to 32 bits before applying formula below.
*
* Formula:
*
* degrees Kelvin = ((97 * 259 * (R4 - R2) / (R3 - R1)) / 100) + 8
*
* NOTE: The basic formula is 259 * (R4-R2) / (R3-R1). The 97/100 is
* an additional correction, which should be centered around 0 degrees
* Celsius (273 degrees Kelvin). The 8 (3 percent of 273) compensates for
* centering the 97/100 correction around 0 degrees K.
*
* Add 273 to Kelvin value to find degrees Celsius, for comparing current
* temperature with factory-measured temperatures when calculating txpower
* settings.
*/
#define TEMPERATURE_CALIB_KELVIN_OFFSET 8
#define TEMPERATURE_CALIB_A_VAL 259
/* Limit range of calculated temperature to be between these Kelvin values */
#define IL_TX_POWER_TEMPERATURE_MIN (263)
#define IL_TX_POWER_TEMPERATURE_MAX (410)
#define IL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(t) \
((t) < IL_TX_POWER_TEMPERATURE_MIN || \
(t) > IL_TX_POWER_TEMPERATURE_MAX)
/********************* END TEMPERATURE ***************************************/
/********************* START TXPOWER *****************************************/
/**
* 4965 txpower calculations rely on information from three sources:
*
* 1) EEPROM
* 2) "initialize" alive notification
* 3) stats notifications
*
* EEPROM data consists of:
*
* 1) Regulatory information (max txpower and channel usage flags) is provided
* separately for each channel that can possibly supported by 4965.
* 40 MHz wide (.11n HT40) channels are listed separately from 20 MHz
* (legacy) channels.
*
* See struct il4965_eeprom_channel for format, and struct il4965_eeprom
* for locations in EEPROM.
*
* 2) Factory txpower calibration information is provided separately for
* sub-bands of contiguous channels. 2.4GHz has just one sub-band,
* but 5 GHz has several sub-bands.
*
* In addition, per-band (2.4 and 5 Ghz) saturation txpowers are provided.
*
* See struct il4965_eeprom_calib_info (and the tree of structures
* contained within it) for format, and struct il4965_eeprom for
* locations in EEPROM.
*
* "Initialization alive" notification (see struct il4965_init_alive_resp)
* consists of:
*
* 1) Temperature calculation parameters.
*
* 2) Power supply voltage measurement.
*
* 3) Tx gain compensation to balance 2 transmitters for MIMO use.
*
* Statistics notifications deliver:
*
* 1) Current values for temperature param R4.
*/
/**
* To calculate a txpower setting for a given desired target txpower, channel,
* modulation bit rate, and transmitter chain (4965 has 2 transmitters to
* support MIMO and transmit diversity), driver must do the following:
*
* 1) Compare desired txpower vs. (EEPROM) regulatory limit for this channel.
* Do not exceed regulatory limit; reduce target txpower if necessary.
*
* If setting up txpowers for MIMO rates (rate idxes 8-15, 24-31),
* 2 transmitters will be used simultaneously; driver must reduce the
* regulatory limit by 3 dB (half-power) for each transmitter, so the
* combined total output of the 2 transmitters is within regulatory limits.
*
*
* 2) Compare target txpower vs. (EEPROM) saturation txpower *reduced by
* backoff for this bit rate*. Do not exceed (saturation - backoff[rate]);
* reduce target txpower if necessary.
*
* Backoff values below are in 1/2 dB units (equivalent to steps in
* txpower gain tables):
*
* OFDM 6 - 36 MBit: 10 steps (5 dB)
* OFDM 48 MBit: 15 steps (7.5 dB)
* OFDM 54 MBit: 17 steps (8.5 dB)
* OFDM 60 MBit: 20 steps (10 dB)
* CCK all rates: 10 steps (5 dB)
*
* Backoff values apply to saturation txpower on a per-transmitter basis;
* when using MIMO (2 transmitters), each transmitter uses the same
* saturation level provided in EEPROM, and the same backoff values;
* no reduction (such as with regulatory txpower limits) is required.
*
* Saturation and Backoff values apply equally to 20 Mhz (legacy) channel
* widths and 40 Mhz (.11n HT40) channel widths; there is no separate
* factory measurement for ht40 channels.
*
* The result of this step is the final target txpower. The rest of
* the steps figure out the proper settings for the device to achieve
* that target txpower.
*
*
* 3) Determine (EEPROM) calibration sub band for the target channel, by
* comparing against first and last channels in each sub band
* (see struct il4965_eeprom_calib_subband_info).
*
*
* 4) Linearly interpolate (EEPROM) factory calibration measurement sets,
* referencing the 2 factory-measured (sample) channels within the sub band.
*
* Interpolation is based on difference between target channel's frequency
* and the sample channels' frequencies. Since channel numbers are based
* on frequency (5 MHz between each channel number), this is equivalent
* to interpolating based on channel number differences.
*
* Note that the sample channels may or may not be the channels at the
* edges of the sub band. The target channel may be "outside" of the
* span of the sampled channels.
*
* Driver may choose the pair (for 2 Tx chains) of measurements (see
* struct il4965_eeprom_calib_ch_info) for which the actual measured
* txpower comes closest to the desired txpower. Usually, though,
* the middle set of measurements is closest to the regulatory limits,
* and is therefore a good choice for all txpower calculations (this
* assumes that high accuracy is needed for maximizing legal txpower,
* while lower txpower configurations do not need as much accuracy).
*
* Driver should interpolate both members of the chosen measurement pair,
* i.e. for both Tx chains (radio transmitters), unless the driver knows
* that only one of the chains will be used (e.g. only one tx antenna
* connected, but this should be unusual). The rate scaling algorithm
* switches antennas to find best performance, so both Tx chains will
* be used (although only one at a time) even for non-MIMO transmissions.
*
* Driver should interpolate factory values for temperature, gain table
* idx, and actual power. The power amplifier detector values are
* not used by the driver.
*
* Sanity check: If the target channel happens to be one of the sample
* channels, the results should agree with the sample channel's
* measurements!
*
*
* 5) Find difference between desired txpower and (interpolated)
* factory-measured txpower. Using (interpolated) factory gain table idx
* (shown elsewhere) as a starting point, adjust this idx lower to
* increase txpower, or higher to decrease txpower, until the target
* txpower is reached. Each step in the gain table is 1/2 dB.
*
* For example, if factory measured txpower is 16 dBm, and target txpower
* is 13 dBm, add 6 steps to the factory gain idx to reduce txpower
* by 3 dB.
*
*
* 6) Find difference between current device temperature and (interpolated)
* factory-measured temperature for sub-band. Factory values are in
* degrees Celsius. To calculate current temperature, see comments for
* "4965 temperature calculation".
*
* If current temperature is higher than factory temperature, driver must
* increase gain (lower gain table idx), and vice verse.
*
* Temperature affects gain differently for different channels:
*
* 2.4 GHz all channels: 3.5 degrees per half-dB step
* 5 GHz channels 34-43: 4.5 degrees per half-dB step
* 5 GHz channels >= 44: 4.0 degrees per half-dB step
*
* NOTE: Temperature can increase rapidly when transmitting, especially
* with heavy traffic at high txpowers. Driver should update
* temperature calculations often under these conditions to
* maintain strong txpower in the face of rising temperature.
*
*
* 7) Find difference between current power supply voltage indicator
* (from "initialize alive") and factory-measured power supply voltage
* indicator (EEPROM).
*
* If the current voltage is higher (indicator is lower) than factory
* voltage, gain should be reduced (gain table idx increased) by:
*
* (eeprom - current) / 7
*
* If the current voltage is lower (indicator is higher) than factory
* voltage, gain should be increased (gain table idx decreased) by:
*
* 2 * (current - eeprom) / 7
*
* If number of idx steps in either direction turns out to be > 2,
* something is wrong ... just use 0.
*
* NOTE: Voltage compensation is independent of band/channel.
*
* NOTE: "Initialize" uCode measures current voltage, which is assumed
* to be constant after this initial measurement. Voltage
* compensation for txpower (number of steps in gain table)
* may be calculated once and used until the next uCode bootload.
*
*
* 8) If setting up txpowers for MIMO rates (rate idxes 8-15, 24-31),
* adjust txpower for each transmitter chain, so txpower is balanced
* between the two chains. There are 5 pairs of tx_atten[group][chain]
* values in "initialize alive", one pair for each of 5 channel ranges:
*
* Group 0: 5 GHz channel 34-43
* Group 1: 5 GHz channel 44-70
* Group 2: 5 GHz channel 71-124
* Group 3: 5 GHz channel 125-200
* Group 4: 2.4 GHz all channels
*
* Add the tx_atten[group][chain] value to the idx for the target chain.
* The values are signed, but are in pairs of 0 and a non-negative number,
* so as to reduce gain (if necessary) of the "hotter" channel. This
* avoids any need to double-check for regulatory compliance after
* this step.
*
*
* 9) If setting up for a CCK rate, lower the gain by adding a CCK compensation
* value to the idx:
*
* Hardware rev B: 9 steps (4.5 dB)
* Hardware rev C: 5 steps (2.5 dB)
*
* Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG,
* bits [3:2], 1 = B, 2 = C.
*
* NOTE: This compensation is in addition to any saturation backoff that
* might have been applied in an earlier step.
*
*
* 10) Select the gain table, based on band (2.4 vs 5 GHz).
*
* Limit the adjusted idx to stay within the table!
*
*
* 11) Read gain table entries for DSP and radio gain, place into appropriate
* location(s) in command (struct il4965_txpowertable_cmd).
*/
/**
* When MIMO is used (2 transmitters operating simultaneously), driver should
* limit each transmitter to deliver a max of 3 dB below the regulatory limit
* for the device. That is, use half power for each transmitter, so total
* txpower is within regulatory limits.
*
* The value "6" represents number of steps in gain table to reduce power 3 dB.
* Each step is 1/2 dB.
*/
#define IL_TX_POWER_MIMO_REGULATORY_COMPENSATION (6)
/**
* CCK gain compensation.
*
* When calculating txpowers for CCK, after making sure that the target power
* is within regulatory and saturation limits, driver must additionally
* back off gain by adding these values to the gain table idx.
*
* Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG,
* bits [3:2], 1 = B, 2 = C.
*/
#define IL_TX_POWER_CCK_COMPENSATION_B_STEP (9)
#define IL_TX_POWER_CCK_COMPENSATION_C_STEP (5)
/*
* 4965 power supply voltage compensation for txpower
*/
#define TX_POWER_IL_VOLTAGE_CODES_PER_03V (7)
/**
* Gain tables.
*
* The following tables contain pair of values for setting txpower, i.e.
* gain settings for the output of the device's digital signal processor (DSP),
* and for the analog gain structure of the transmitter.
*
* Each entry in the gain tables represents a step of 1/2 dB. Note that these
* are *relative* steps, not indications of absolute output power. Output
* power varies with temperature, voltage, and channel frequency, and also
* requires consideration of average power (to satisfy regulatory constraints),
* and peak power (to avoid distortion of the output signal).
*
* Each entry contains two values:
* 1) DSP gain (or sometimes called DSP attenuation). This is a fine-grained
* linear value that multiplies the output of the digital signal processor,
* before being sent to the analog radio.
* 2) Radio gain. This sets the analog gain of the radio Tx path.
* It is a coarser setting, and behaves in a logarithmic (dB) fashion.
*
* EEPROM contains factory calibration data for txpower. This maps actual
* measured txpower levels to gain settings in the "well known" tables
* below ("well-known" means here that both factory calibration *and* the
* driver work with the same table).
*
* There are separate tables for 2.4 GHz and 5 GHz bands. The 5 GHz table
* has an extension (into negative idxes), in case the driver needs to
* boost power setting for high device temperatures (higher than would be
* present during factory calibration). A 5 Ghz EEPROM idx of "40"
* corresponds to the 49th entry in the table used by the driver.
*/
#define MIN_TX_GAIN_IDX (0) /* highest gain, lowest idx, 2.4 */
#define MIN_TX_GAIN_IDX_52GHZ_EXT (-9) /* highest gain, lowest idx, 5 */
/**
* 2.4 GHz gain table
*
* Index Dsp gain Radio gain
* 0 110 0x3f (highest gain)
* 1 104 0x3f
* 2 98 0x3f
* 3 110 0x3e
* 4 104 0x3e
* 5 98 0x3e
* 6 110 0x3d
* 7 104 0x3d
* 8 98 0x3d
* 9 110 0x3c
* 10 104 0x3c
* 11 98 0x3c
* 12 110 0x3b
* 13 104 0x3b
* 14 98 0x3b
* 15 110 0x3a
* 16 104 0x3a
* 17 98 0x3a
* 18 110 0x39
* 19 104 0x39
* 20 98 0x39
* 21 110 0x38
* 22 104 0x38
* 23 98 0x38
* 24 110 0x37
* 25 104 0x37
* 26 98 0x37
* 27 110 0x36
* 28 104 0x36
* 29 98 0x36
* 30 110 0x35
* 31 104 0x35
* 32 98 0x35
* 33 110 0x34
* 34 104 0x34
* 35 98 0x34
* 36 110 0x33
* 37 104 0x33
* 38 98 0x33
* 39 110 0x32
* 40 104 0x32
* 41 98 0x32
* 42 110 0x31
* 43 104 0x31
* 44 98 0x31
* 45 110 0x30
* 46 104 0x30
* 47 98 0x30
* 48 110 0x6
* 49 104 0x6
* 50 98 0x6
* 51 110 0x5
* 52 104 0x5
* 53 98 0x5
* 54 110 0x4
* 55 104 0x4
* 56 98 0x4
* 57 110 0x3
* 58 104 0x3
* 59 98 0x3
* 60 110 0x2
* 61 104 0x2
* 62 98 0x2
* 63 110 0x1
* 64 104 0x1
* 65 98 0x1
* 66 110 0x0
* 67 104 0x0
* 68 98 0x0
* 69 97 0
* 70 96 0
* 71 95 0
* 72 94 0
* 73 93 0
* 74 92 0
* 75 91 0
* 76 90 0
* 77 89 0
* 78 88 0
* 79 87 0
* 80 86 0
* 81 85 0
* 82 84 0
* 83 83 0
* 84 82 0
* 85 81 0
* 86 80 0
* 87 79 0
* 88 78 0
* 89 77 0
* 90 76 0
* 91 75 0
* 92 74 0
* 93 73 0
* 94 72 0
* 95 71 0
* 96 70 0
* 97 69 0
* 98 68 0
*/
/**
* 5 GHz gain table
*
* Index Dsp gain Radio gain
* -9 123 0x3F (highest gain)
* -8 117 0x3F
* -7 110 0x3F
* -6 104 0x3F
* -5 98 0x3F
* -4 110 0x3E
* -3 104 0x3E
* -2 98 0x3E
* -1 110 0x3D
* 0 104 0x3D
* 1 98 0x3D
* 2 110 0x3C
* 3 104 0x3C
* 4 98 0x3C
* 5 110 0x3B
* 6 104 0x3B
* 7 98 0x3B
* 8 110 0x3A
* 9 104 0x3A
* 10 98 0x3A
* 11 110 0x39
* 12 104 0x39
* 13 98 0x39
* 14 110 0x38
* 15 104 0x38
* 16 98 0x38
* 17 110 0x37
* 18 104 0x37
* 19 98 0x37
* 20 110 0x36
* 21 104 0x36
* 22 98 0x36
* 23 110 0x35
* 24 104 0x35
* 25 98 0x35
* 26 110 0x34
* 27 104 0x34
* 28 98 0x34
* 29 110 0x33
* 30 104 0x33
* 31 98 0x33
* 32 110 0x32
* 33 104 0x32
* 34 98 0x32
* 35 110 0x31
* 36 104 0x31
* 37 98 0x31
* 38 110 0x30
* 39 104 0x30
* 40 98 0x30
* 41 110 0x25
* 42 104 0x25
* 43 98 0x25
* 44 110 0x24
* 45 104 0x24
* 46 98 0x24
* 47 110 0x23
* 48 104 0x23
* 49 98 0x23
* 50 110 0x22
* 51 104 0x18
* 52 98 0x18
* 53 110 0x17
* 54 104 0x17
* 55 98 0x17
* 56 110 0x16
* 57 104 0x16
* 58 98 0x16
* 59 110 0x15
* 60 104 0x15
* 61 98 0x15
* 62 110 0x14
* 63 104 0x14
* 64 98 0x14
* 65 110 0x13
* 66 104 0x13
* 67 98 0x13
* 68 110 0x12
* 69 104 0x08
* 70 98 0x08
* 71 110 0x07
* 72 104 0x07
* 73 98 0x07
* 74 110 0x06
* 75 104 0x06
* 76 98 0x06
* 77 110 0x05
* 78 104 0x05
* 79 98 0x05
* 80 110 0x04
* 81 104 0x04
* 82 98 0x04
* 83 110 0x03
* 84 104 0x03
* 85 98 0x03
* 86 110 0x02
* 87 104 0x02
* 88 98 0x02
* 89 110 0x01
* 90 104 0x01
* 91 98 0x01
* 92 110 0x00
* 93 104 0x00
* 94 98 0x00
* 95 93 0x00
* 96 88 0x00
* 97 83 0x00
* 98 78 0x00
*/
/**
* Sanity checks and default values for EEPROM regulatory levels.
* If EEPROM values fall outside MIN/MAX range, use default values.
*
* Regulatory limits refer to the maximum average txpower allowed by
* regulatory agencies in the geographies in which the device is meant
* to be operated. These limits are SKU-specific (i.e. geography-specific),
* and channel-specific; each channel has an individual regulatory limit
* listed in the EEPROM.
*
* Units are in half-dBm (i.e. "34" means 17 dBm).
*/
#define IL_TX_POWER_DEFAULT_REGULATORY_24 (34)
#define IL_TX_POWER_DEFAULT_REGULATORY_52 (34)
#define IL_TX_POWER_REGULATORY_MIN (0)
#define IL_TX_POWER_REGULATORY_MAX (34)
/**
* Sanity checks and default values for EEPROM saturation levels.
* If EEPROM values fall outside MIN/MAX range, use default values.
*
* Saturation is the highest level that the output power amplifier can produce
* without significant clipping distortion. This is a "peak" power level.
* Different types of modulation (i.e. various "rates", and OFDM vs. CCK)
* require differing amounts of backoff, relative to their average power output,
* in order to avoid clipping distortion.
*
* Driver must make sure that it is violating neither the saturation limit,
* nor the regulatory limit, when calculating Tx power settings for various
* rates.
*
* Units are in half-dBm (i.e. "38" means 19 dBm).
*/
#define IL_TX_POWER_DEFAULT_SATURATION_24 (38)
#define IL_TX_POWER_DEFAULT_SATURATION_52 (38)
#define IL_TX_POWER_SATURATION_MIN (20)
#define IL_TX_POWER_SATURATION_MAX (50)
/**
* Channel groups used for Tx Attenuation calibration (MIMO tx channel balance)
* and thermal Txpower calibration.
*
* When calculating txpower, driver must compensate for current device
* temperature; higher temperature requires higher gain. Driver must calculate
* current temperature (see "4965 temperature calculation"), then compare vs.
* factory calibration temperature in EEPROM; if current temperature is higher
* than factory temperature, driver must *increase* gain by proportions shown
* in table below. If current temperature is lower than factory, driver must
* *decrease* gain.
*
* Different frequency ranges require different compensation, as shown below.
*/
/* Group 0, 5.2 GHz ch 34-43: 4.5 degrees per 1/2 dB. */
#define CALIB_IL_TX_ATTEN_GR1_FCH 34
#define CALIB_IL_TX_ATTEN_GR1_LCH 43
/* Group 1, 5.3 GHz ch 44-70: 4.0 degrees per 1/2 dB. */
#define CALIB_IL_TX_ATTEN_GR2_FCH 44
#define CALIB_IL_TX_ATTEN_GR2_LCH 70
/* Group 2, 5.5 GHz ch 71-124: 4.0 degrees per 1/2 dB. */
#define CALIB_IL_TX_ATTEN_GR3_FCH 71
#define CALIB_IL_TX_ATTEN_GR3_LCH 124
/* Group 3, 5.7 GHz ch 125-200: 4.0 degrees per 1/2 dB. */
#define CALIB_IL_TX_ATTEN_GR4_FCH 125
#define CALIB_IL_TX_ATTEN_GR4_LCH 200
/* Group 4, 2.4 GHz all channels: 3.5 degrees per 1/2 dB. */
#define CALIB_IL_TX_ATTEN_GR5_FCH 1
#define CALIB_IL_TX_ATTEN_GR5_LCH 20
enum {
CALIB_CH_GROUP_1 = 0,
CALIB_CH_GROUP_2 = 1,
CALIB_CH_GROUP_3 = 2,
CALIB_CH_GROUP_4 = 3,
CALIB_CH_GROUP_5 = 4,
CALIB_CH_GROUP_MAX
};
/********************* END TXPOWER *****************************************/
/**
* Tx/Rx Queues
*
* Most communication between driver and 4965 is via queues of data buffers.
* For example, all commands that the driver issues to device's embedded
* controller (uCode) are via the command queue (one of the Tx queues). All
* uCode command responses/replies/notifications, including Rx frames, are
* conveyed from uCode to driver via the Rx queue.
*
* Most support for these queues, including handshake support, resides in
* structures in host DRAM, shared between the driver and the device. When
* allocating this memory, the driver must make sure that data written by
* the host CPU updates DRAM immediately (and does not get "stuck" in CPU's
* cache memory), so DRAM and cache are consistent, and the device can
* immediately see changes made by the driver.
*
* 4965 supports up to 16 DRAM-based Tx queues, and services these queues via
* up to 7 DMA channels (FIFOs). Each Tx queue is supported by a circular array
* in DRAM containing 256 Transmit Frame Descriptors (TFDs).
*/
#define IL49_NUM_FIFOS 7
#define IL49_CMD_FIFO_NUM 4
#define IL49_NUM_QUEUES 16
#define IL49_NUM_AMPDU_QUEUES 8
/**
* struct il4965_schedq_bc_tbl
*
* Byte Count table
*
* Each Tx queue uses a byte-count table containing 320 entries:
* one 16-bit entry for each of 256 TFDs, plus an additional 64 entries that
* duplicate the first 64 entries (to avoid wrap-around within a Tx win;
* max Tx win is 64 TFDs).
*
* When driver sets up a new TFD, it must also enter the total byte count
* of the frame to be transmitted into the corresponding entry in the byte
* count table for the chosen Tx queue. If the TFD idx is 0-63, the driver
* must duplicate the byte count entry in corresponding idx 256-319.
*
* padding puts each byte count table on a 1024-byte boundary;
* 4965 assumes tables are separated by 1024 bytes.
*/
struct il4965_scd_bc_tbl {
__le16 tfd_offset[TFD_QUEUE_BC_SIZE];
u8 pad[1024 - (TFD_QUEUE_BC_SIZE) * sizeof(__le16)];
} __packed;
#define IL4965_RTC_INST_LOWER_BOUND (0x000000)
/* RSSI to dBm */
#define IL4965_RSSI_OFFSET 44
/* PCI registers */
#define PCI_CFG_RETRY_TIMEOUT 0x041
/* PCI register values */
#define PCI_CFG_LINK_CTRL_VAL_L0S_EN 0x01
#define PCI_CFG_LINK_CTRL_VAL_L1_EN 0x02
#define IL4965_DEFAULT_TX_RETRY 15
/* EEPROM */
#define IL4965_FIRST_AMPDU_QUEUE 10
/* Calibration */
void il4965_chain_noise_calibration(struct il_priv *il, void *stat_resp);
void il4965_sensitivity_calibration(struct il_priv *il, void *resp);
void il4965_init_sensitivity(struct il_priv *il);
void il4965_reset_run_time_calib(struct il_priv *il);
void il4965_calib_free_results(struct il_priv *il);
/* Debug */
#ifdef CONFIG_IWLEGACY_DEBUGFS
ssize_t il4965_ucode_rx_stats_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos);
ssize_t il4965_ucode_tx_stats_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos);
ssize_t il4965_ucode_general_stats_read(struct file *file,
char __user *user_buf, size_t count,
loff_t *ppos);
#endif
/****************************/
/* Flow Handler Definitions */
/****************************/
/**
* This I/O area is directly read/writable by driver (e.g. Linux uses writel())
* Addresses are offsets from device's PCI hardware base address.
*/
#define FH49_MEM_LOWER_BOUND (0x1000)
#define FH49_MEM_UPPER_BOUND (0x2000)
/**
* Keep-Warm (KW) buffer base address.
*
* Driver must allocate a 4KByte buffer that is used by 4965 for keeping the
* host DRAM powered on (via dummy accesses to DRAM) to maintain low-latency
* DRAM access when 4965 is Txing or Rxing. The dummy accesses prevent host
* from going into a power-savings mode that would cause higher DRAM latency,
* and possible data over/under-runs, before all Tx/Rx is complete.
*
* Driver loads FH49_KW_MEM_ADDR_REG with the physical address (bits 35:4)
* of the buffer, which must be 4K aligned. Once this is set up, the 4965
* automatically invokes keep-warm accesses when normal accesses might not
* be sufficient to maintain fast DRAM response.
*
* Bit fields:
* 31-0: Keep-warm buffer physical base address [35:4], must be 4K aligned
*/
#define FH49_KW_MEM_ADDR_REG (FH49_MEM_LOWER_BOUND + 0x97C)
/**
* TFD Circular Buffers Base (CBBC) addresses
*
* 4965 has 16 base pointer registers, one for each of 16 host-DRAM-resident
* circular buffers (CBs/queues) containing Transmit Frame Descriptors (TFDs)
* (see struct il_tfd_frame). These 16 pointer registers are offset by 0x04
* bytes from one another. Each TFD circular buffer in DRAM must be 256-byte
* aligned (address bits 0-7 must be 0).
*
* Bit fields in each pointer register:
* 27-0: TFD CB physical base address [35:8], must be 256-byte aligned
*/
#define FH49_MEM_CBBC_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0x9D0)
#define FH49_MEM_CBBC_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xA10)
/* Find TFD CB base pointer for given queue (range 0-15). */
#define FH49_MEM_CBBC_QUEUE(x) (FH49_MEM_CBBC_LOWER_BOUND + (x) * 0x4)
/**
* Rx SRAM Control and Status Registers (RSCSR)
*
* These registers provide handshake between driver and 4965 for the Rx queue
* (this queue handles *all* command responses, notifications, Rx data, etc.
* sent from 4965 uCode to host driver). Unlike Tx, there is only one Rx
* queue, and only one Rx DMA/FIFO channel. Also unlike Tx, which can
* concatenate up to 20 DRAM buffers to form a Tx frame, each Receive Buffer
* Descriptor (RBD) points to only one Rx Buffer (RB); there is a 1:1
* mapping between RBDs and RBs.
*
* Driver must allocate host DRAM memory for the following, and set the
* physical address of each into 4965 registers:
*
* 1) Receive Buffer Descriptor (RBD) circular buffer (CB), typically with 256
* entries (although any power of 2, up to 4096, is selectable by driver).
* Each entry (1 dword) points to a receive buffer (RB) of consistent size
* (typically 4K, although 8K or 16K are also selectable by driver).
* Driver sets up RB size and number of RBDs in the CB via Rx config
* register FH49_MEM_RCSR_CHNL0_CONFIG_REG.
*
* Bit fields within one RBD:
* 27-0: Receive Buffer physical address bits [35:8], 256-byte aligned
*
* Driver sets physical address [35:8] of base of RBD circular buffer
* into FH49_RSCSR_CHNL0_RBDCB_BASE_REG [27:0].
*
* 2) Rx status buffer, 8 bytes, in which 4965 indicates which Rx Buffers
* (RBs) have been filled, via a "write pointer", actually the idx of
* the RB's corresponding RBD within the circular buffer. Driver sets
* physical address [35:4] into FH49_RSCSR_CHNL0_STTS_WPTR_REG [31:0].
*
* Bit fields in lower dword of Rx status buffer (upper dword not used
* by driver; see struct il4965_shared, val0):
* 31-12: Not used by driver
* 11- 0: Index of last filled Rx buffer descriptor
* (4965 writes, driver reads this value)
*
* As the driver prepares Receive Buffers (RBs) for 4965 to fill, driver must
* enter pointers to these RBs into contiguous RBD circular buffer entries,
* and update the 4965's "write" idx register,
* FH49_RSCSR_CHNL0_RBDCB_WPTR_REG.
*
* This "write" idx corresponds to the *next* RBD that the driver will make
* available, i.e. one RBD past the tail of the ready-to-fill RBDs within
* the circular buffer. This value should initially be 0 (before preparing any
* RBs), should be 8 after preparing the first 8 RBs (for example), and must
* wrap back to 0 at the end of the circular buffer (but don't wrap before
* "read" idx has advanced past 1! See below).
* NOTE: 4965 EXPECTS THE WRITE IDX TO BE INCREMENTED IN MULTIPLES OF 8.
*
* As the 4965 fills RBs (referenced from contiguous RBDs within the circular
* buffer), it updates the Rx status buffer in host DRAM, 2) described above,
* to tell the driver the idx of the latest filled RBD. The driver must
* read this "read" idx from DRAM after receiving an Rx interrupt from 4965.
*
* The driver must also internally keep track of a third idx, which is the
* next RBD to process. When receiving an Rx interrupt, driver should process
* all filled but unprocessed RBs up to, but not including, the RB
* corresponding to the "read" idx. For example, if "read" idx becomes "1",
* driver may process the RB pointed to by RBD 0. Depending on volume of
* traffic, there may be many RBs to process.
*
* If read idx == write idx, 4965 thinks there is no room to put new data.
* Due to this, the maximum number of filled RBs is 255, instead of 256. To
* be safe, make sure that there is a gap of at least 2 RBDs between "write"
* and "read" idxes; that is, make sure that there are no more than 254
* buffers waiting to be filled.
*/
#define FH49_MEM_RSCSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xBC0)
#define FH49_MEM_RSCSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xC00)
#define FH49_MEM_RSCSR_CHNL0 (FH49_MEM_RSCSR_LOWER_BOUND)
/**
* Physical base address of 8-byte Rx Status buffer.
* Bit fields:
* 31-0: Rx status buffer physical base address [35:4], must 16-byte aligned.
*/
#define FH49_RSCSR_CHNL0_STTS_WPTR_REG (FH49_MEM_RSCSR_CHNL0)
/**
* Physical base address of Rx Buffer Descriptor Circular Buffer.
* Bit fields:
* 27-0: RBD CD physical base address [35:8], must be 256-byte aligned.
*/
#define FH49_RSCSR_CHNL0_RBDCB_BASE_REG (FH49_MEM_RSCSR_CHNL0 + 0x004)
/**
* Rx write pointer (idx, really!).
* Bit fields:
* 11-0: Index of driver's most recent prepared-to-be-filled RBD, + 1.
* NOTE: For 256-entry circular buffer, use only bits [7:0].
*/
#define FH49_RSCSR_CHNL0_RBDCB_WPTR_REG (FH49_MEM_RSCSR_CHNL0 + 0x008)
#define FH49_RSCSR_CHNL0_WPTR (FH49_RSCSR_CHNL0_RBDCB_WPTR_REG)
/**
* Rx Config/Status Registers (RCSR)
* Rx Config Reg for channel 0 (only channel used)
*
* Driver must initialize FH49_MEM_RCSR_CHNL0_CONFIG_REG as follows for
* normal operation (see bit fields).
*
* Clearing FH49_MEM_RCSR_CHNL0_CONFIG_REG to 0 turns off Rx DMA.
* Driver should poll FH49_MEM_RSSR_RX_STATUS_REG for
* FH49_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (bit 24) before continuing.
*
* Bit fields:
* 31-30: Rx DMA channel enable: '00' off/pause, '01' pause at end of frame,
* '10' operate normally
* 29-24: reserved
* 23-20: # RBDs in circular buffer = 2^value; use "8" for 256 RBDs (normal),
* min "5" for 32 RBDs, max "12" for 4096 RBDs.
* 19-18: reserved
* 17-16: size of each receive buffer; '00' 4K (normal), '01' 8K,
* '10' 12K, '11' 16K.
* 15-14: reserved
* 13-12: IRQ destination; '00' none, '01' host driver (normal operation)
* 11- 4: timeout for closing Rx buffer and interrupting host (units 32 usec)
* typical value 0x10 (about 1/2 msec)
* 3- 0: reserved
*/
#define FH49_MEM_RCSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xC00)
#define FH49_MEM_RCSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xCC0)
#define FH49_MEM_RCSR_CHNL0 (FH49_MEM_RCSR_LOWER_BOUND)
#define FH49_MEM_RCSR_CHNL0_CONFIG_REG (FH49_MEM_RCSR_CHNL0)
#define FH49_RCSR_CHNL0_RX_CONFIG_RB_TIMEOUT_MSK (0x00000FF0) /* bits 4-11 */
#define FH49_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_MSK (0x00001000) /* bits 12 */
#define FH49_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK (0x00008000) /* bit 15 */
#define FH49_RCSR_CHNL0_RX_CONFIG_RB_SIZE_MSK (0x00030000) /* bits 16-17 */
#define FH49_RCSR_CHNL0_RX_CONFIG_RBDBC_SIZE_MSK (0x00F00000) /* bits 20-23 */
#define FH49_RCSR_CHNL0_RX_CONFIG_DMA_CHNL_EN_MSK (0xC0000000) /* bits 30-31 */
#define FH49_RCSR_RX_CONFIG_RBDCB_SIZE_POS (20)
#define FH49_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS (4)
#define RX_RB_TIMEOUT (0x10)
#define FH49_RCSR_RX_CONFIG_CHNL_EN_PAUSE_VAL (0x00000000)
#define FH49_RCSR_RX_CONFIG_CHNL_EN_PAUSE_EOF_VAL (0x40000000)
#define FH49_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL (0x80000000)
#define FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K (0x00000000)
#define FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K (0x00010000)
#define FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_12K (0x00020000)
#define FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_16K (0x00030000)
#define FH49_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY (0x00000004)
#define FH49_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_NO_INT_VAL (0x00000000)
#define FH49_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL (0x00001000)
/**
* Rx Shared Status Registers (RSSR)
*
* After stopping Rx DMA channel (writing 0 to
* FH49_MEM_RCSR_CHNL0_CONFIG_REG), driver must poll
* FH49_MEM_RSSR_RX_STATUS_REG until Rx channel is idle.
*
* Bit fields:
* 24: 1 = Channel 0 is idle
*
* FH49_MEM_RSSR_SHARED_CTRL_REG and FH49_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV
* contain default values that should not be altered by the driver.
*/
#define FH49_MEM_RSSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xC40)
#define FH49_MEM_RSSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xD00)
#define FH49_MEM_RSSR_SHARED_CTRL_REG (FH49_MEM_RSSR_LOWER_BOUND)
#define FH49_MEM_RSSR_RX_STATUS_REG (FH49_MEM_RSSR_LOWER_BOUND + 0x004)
#define FH49_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV\
(FH49_MEM_RSSR_LOWER_BOUND + 0x008)
#define FH49_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0x01000000)
#define FH49_MEM_TFDIB_REG1_ADDR_BITSHIFT 28
/* TFDB Area - TFDs buffer table */
#define FH49_MEM_TFDIB_DRAM_ADDR_LSB_MSK (0xFFFFFFFF)
#define FH49_TFDIB_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0x900)
#define FH49_TFDIB_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0x958)
#define FH49_TFDIB_CTRL0_REG(_chnl) (FH49_TFDIB_LOWER_BOUND + 0x8 * (_chnl))
#define FH49_TFDIB_CTRL1_REG(_chnl) (FH49_TFDIB_LOWER_BOUND + 0x8 * (_chnl) + 0x4)
/**
* Transmit DMA Channel Control/Status Registers (TCSR)
*
* 4965 has one configuration register for each of 8 Tx DMA/FIFO channels
* supported in hardware (don't confuse these with the 16 Tx queues in DRAM,
* which feed the DMA/FIFO channels); config regs are separated by 0x20 bytes.
*
* To use a Tx DMA channel, driver must initialize its
* FH49_TCSR_CHNL_TX_CONFIG_REG(chnl) with:
*
* FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
* FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL
*
* All other bits should be 0.
*
* Bit fields:
* 31-30: Tx DMA channel enable: '00' off/pause, '01' pause at end of frame,
* '10' operate normally
* 29- 4: Reserved, set to "0"
* 3: Enable internal DMA requests (1, normal operation), disable (0)
* 2- 0: Reserved, set to "0"
*/
#define FH49_TCSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xD00)
#define FH49_TCSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xE60)
/* Find Control/Status reg for given Tx DMA/FIFO channel */
#define FH49_TCSR_CHNL_NUM (7)
#define FH50_TCSR_CHNL_NUM (8)
/* TCSR: tx_config register values */
#define FH49_TCSR_CHNL_TX_CONFIG_REG(_chnl) \
(FH49_TCSR_LOWER_BOUND + 0x20 * (_chnl))
#define FH49_TCSR_CHNL_TX_CREDIT_REG(_chnl) \
(FH49_TCSR_LOWER_BOUND + 0x20 * (_chnl) + 0x4)
#define FH49_TCSR_CHNL_TX_BUF_STS_REG(_chnl) \
(FH49_TCSR_LOWER_BOUND + 0x20 * (_chnl) + 0x8)
#define FH49_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF (0x00000000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_DRV (0x00000001)
#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE (0x00000000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE (0x00000008)
#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_NOINT (0x00000000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD (0x00100000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD (0x00200000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT (0x00000000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_ENDTFD (0x00400000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_IFTFD (0x00800000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE (0x00000000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE_EOF (0x40000000)
#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE (0x80000000)
#define FH49_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_EMPTY (0x00000000)
#define FH49_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_WAIT (0x00002000)
#define FH49_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID (0x00000003)
#define FH49_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM (20)
#define FH49_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX (12)
/**
* Tx Shared Status Registers (TSSR)
*
* After stopping Tx DMA channel (writing 0 to
* FH49_TCSR_CHNL_TX_CONFIG_REG(chnl)), driver must poll
* FH49_TSSR_TX_STATUS_REG until selected Tx channel is idle
* (channel's buffers empty | no pending requests).
*
* Bit fields:
* 31-24: 1 = Channel buffers empty (channel 7:0)
* 23-16: 1 = No pending requests (channel 7:0)
*/
#define FH49_TSSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xEA0)
#define FH49_TSSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xEC0)
#define FH49_TSSR_TX_STATUS_REG (FH49_TSSR_LOWER_BOUND + 0x010)
/**
* Bit fields for TSSR(Tx Shared Status & Control) error status register:
* 31: Indicates an address error when accessed to internal memory
* uCode/driver must write "1" in order to clear this flag
* 30: Indicates that Host did not send the expected number of dwords to FH
* uCode/driver must write "1" in order to clear this flag
* 16-9:Each status bit is for one channel. Indicates that an (Error) ActDMA
* command was received from the scheduler while the TRB was already full
* with previous command
* uCode/driver must write "1" in order to clear this flag
* 7-0: Each status bit indicates a channel's TxCredit error. When an error
* bit is set, it indicates that the FH has received a full indication
* from the RTC TxFIFO and the current value of the TxCredit counter was
* not equal to zero. This mean that the credit mechanism was not
* synchronized to the TxFIFO status
* uCode/driver must write "1" in order to clear this flag
*/
#define FH49_TSSR_TX_ERROR_REG (FH49_TSSR_LOWER_BOUND + 0x018)
#define FH49_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(_chnl) ((1 << (_chnl)) << 16)
/* Tx service channels */
#define FH49_SRVC_CHNL (9)
#define FH49_SRVC_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0x9C8)
#define FH49_SRVC_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0x9D0)
#define FH49_SRVC_CHNL_SRAM_ADDR_REG(_chnl) \
(FH49_SRVC_LOWER_BOUND + ((_chnl) - 9) * 0x4)
#define FH49_TX_CHICKEN_BITS_REG (FH49_MEM_LOWER_BOUND + 0xE98)
/* Instruct FH to increment the retry count of a packet when
* it is brought from the memory to TX-FIFO
*/
#define FH49_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN (0x00000002)
/* Keep Warm Size */
#define IL_KW_SIZE 0x1000 /* 4k */
#endif /* __il_4965_h__ */
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