diff options
Diffstat (limited to 'drivers/net/wireless/digiPiper/mac.h')
| -rw-r--r-- | drivers/net/wireless/digiPiper/mac.h | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/drivers/net/wireless/digiPiper/mac.h b/drivers/net/wireless/digiPiper/mac.h new file mode 100644 index 000000000000..892a15a8b67c --- /dev/null +++ b/drivers/net/wireless/digiPiper/mac.h @@ -0,0 +1,375 @@ +#ifndef DIGI_MAC_H_ +#define DIGI_MAC_H_ + +enum baseband_control_regs { + BB_VERSION = 0x00, + BB_GENERAL_CTL = 0x04, + BB_GENERAL_STAT = 0x08, + BB_RSSI = 0x0c, + BB_IRQ_MASK = 0x10, + BB_IRQ_STAT = 0x14, + BB_SPI_DATA = 0x18, + BB_SPI_CTRL = 0x1c, + BB_DATA_FIFO = 0x20, + BB_TRACK_CONTROL = 0x28, + BB_CONF_2 = 0x2c, + BB_AES_FIFO = 0x30, + BB_AES_CTL = 0x38, + BB_OUTPUT_CONTROL = 0x3c +}; + +#define BB_VERSION_MASK(v) ((v) & 0xffff) + +#define BB_GENERAL_CTL_RX_EN (1<<0) +#define BB_GENERAL_CTL_ANT_DIV (1<<1) +#define BB_GENERAL_CTL_ANT_SEL (1<<2) +#define BB_GENERAL_CTL_GEN_5GEN (1<<3) // 5 GHz band enable +#define BB_GENERAL_CTL_SH_PRE (1<<4) +#define BB_GENERAL_CTL_RXFIFORST (1<<5) +#define BB_GENERAL_CTL_TXFIFORST (1<<6) +#define BB_GENERAL_CTL_TX_HOLD (1<<7) +#define BB_GENERAL_CTL_BEACON_EN (1<<8) +#define BB_GENERAL_CTL_FW_LOAD_ENABLE (1 << 9) +#define BB_GENERAL_CTL_DSP_LOAD_ENABLE (1 << 10) +#define BB_GENERAL_CTL_MAC_ASSIST_ENABLE (1 << 11) +#define BB_GENERAL_CTL_TX_FIFO_FULL (1<<15) +#define BB_GENERAL_CTL_TX_FIFO_EMPTY (1<<14) +/* TODO: verify max gain value for Piper and Wi9p*/ +#define BB_GENERAL_CTL_MAX_GAIN(g) (((g) & 0x7f)<<16) +#define BB_GENERAL_CTL_PWR_UP (1<<24) +#define BB_GENERAL_CTL_ADC_CLK_EN (1<<25) +#define BB_GENERAL_CTL_BOOT_STAT (1<<28) +#define BB_GENERAL_CTL_CLK_EN (1<<29) +#define BB_GENERAL_CTL_SPI_RST (1<<30) + +#define BB_GENERAL_CTL_MAX_GAIN_MASK (0x007F0000) +#define BB_GENERAL_CTL_DEFAULT_MAX_GAIN_A (0x00790000) +#define BB_GENERAL_CTL_DEFAULT_MAX_GAIN_BG (0x007c0000) + +#if defined(CONFIG_PIPER_WIFI) +#if 0 +#define BB_GENERAL_CTL_INIT (BB_GENERAL_CTL_MAX_GAIN(0x7a) | \ + BB_GENERAL_CTL_PWR_UP | BB_GENERAL_CTL_ADC_CLK_EN | \ + BB_GENERAL_CTL_BOOT_STAT | BB_GENERAL_CTL_CLK_EN) +#define BB_GENERAL_CTL_RESET (BB_GENERAL_CTL_MAX_GAIN(0x7f) | \ + BB_GENERAL_CTL_ADC_CLK_EN | BB_GENERAL_CTL_BOOT_STAT | \ + BB_GENERAL_CTL_SPI_RST) +#else +#define BB_GENERAL_CTL_INIT (BB_GENERAL_CTL_MAX_GAIN(0x7a) + +#define BB_GENERAL_CTL_RESET (BB_GENERAL_CTL_MAX_GAIN(0x7f) | \ + BB_GENERAL_CTL_SPI_RST +#endif +#else +#define BB_GENERAL_CTL_INIT (BB_GENERAL_CTL_MAX_GAIN(0x7a) | \ + BB_GENERAL_CTL_PWR_UP | BB_GENERAL_CTL_ADC_CLK_EN | \ + BB_GENERAL_CTL_BOOT_STAT | BB_GENERAL_CTL_CLK_EN) + +#define BB_GENERAL_CTL_RESET (BB_GENERAL_CTL_MAX_GAIN(0x7f) | \ + BB_GENERAL_CTL_ADC_CLK_EN | BB_GENERAL_CTL_BOOT_STAT | \ + BB_GENERAL_CTL_SPI_RST) +#endif +#define BB_RSSI_LED (1<<8) +#define BB_RSSI_EAS_FIFO_EMPTY (1 << 16) +#define BB_RSSI_EAS_FIFO_FULL (1 << 17) +#define BB_RSSI_EAS_BUSY (1 << 18) +#define BB_RSSI_EAS_MIC (1 << 19) +#define BB_RSSI_ANT_MASK (0xff<<24) +#define BB_RSSI_ANT_NO_DIV_MAP (0x96000000) +#define BB_RSSI_ANT_DIV_MAP (0x1E000000) + +#define BB_GENERAL_STAT_RESET (1<<30) +/* + * STAT_B_EN is a constant that defines a bit in the Wireless Controller FPGA Baseband Control Register + * for General Status, which enables the PSK/CCK receiver baseband circuitry (802.11b receiver). + * STAT_A_EN is a constant that defines a bit in the Wireless Controller FPGA Baseband Control Register + * for General Status, which enables the OFDM receive baseband circuitry (802.11a receiver). + */ + +#define BB_GENERAL_STAT_B_EN 0x10000000 // B EN (PSK/CCK) +#define BB_GENERAL_STAT_A_EN 0x20000000 // A EN (OFDM) +#define BB_GENERAL_STAT_RX_FIFO_EMPTY (1 << 4) +#define BB_GENERAL_STAT_DC_DIS (1 << 24) +#define BB_GENERAL_STAT_SRC_DIS (1 << 16) +#define BB_GENERAL_STAT_SPRD_DIS (1 << 17) +#define BB_GENERAL_STAT_DLL_DIS (1 << 18) +#define TRACK_TX_B_GAIN_MASK 0xff000000 // Mask word for B_TX_GAIN +#define TRACK_TX_B_GAIN_NORMAL 0xA0000000 // normal setting for B_TX_GAIN +#define TRACK_BG_BAND 0x00430000 // Tracking constant for 802.11 b/g frequency band +#define TRACK_CONSTANT_MASK 0x00ff0000 // mask for tracking constant +#define TRACK_4920_4980_A_BAND 0x00210000 // Tracking constant for 802.11 a sub-frequency band +#define TRACK_5150_5350_A_BAND 0x001F0000 // Tracking constant for 802.11 a sub-frequency band +#define TRACK_5470_5725_A_BAND 0x001D0000 // Tracking constant for 802.11 a sub-frequency band +#define TRACK_5725_5825_A_BAND 0x001C0000 // Tracking constant for 802.11 a sub-frequency band + + +#define BB_IRQ_MASK_RX_FIFO (1<<0) +#define BB_IRQ_MASK_TX_FIFO_EMPTY (1<<1) +#define BB_IRQ_MASK_TIMEOUT (1<<2) +#define BB_IRQ_MASK_TX_ABORT (1<<3) +#define BB_IRQ_MASK_TBTT (1<<4) +#define BB_IRQ_MASK_ATIM (1<<5) +#define BB_IRQ_MASK_RX_OVERRUN (1<<6) + +#define BB_AES_CTL_KEY_LOAD (1<<2) +#define BB_AES_CTL_AES_MODE (1<<4) + +enum mac_control_regs { + MAC_STA_ID0 = 0x40, + MAC_STA_ID1 = 0x44, + MAC_BSS_ID0 = 0x48, + MAC_BSS_ID1 = 0x4c, + MAC_SSID_LEN = 0x50, /* OFDM_BRS, PSK_BRS, TX_CTL, SSID_LEN */ + MAC_BACKOFF = 0x54, /* actually 0x56; 2 low order bytes are empty */ + MAC_DTIM_PERIOD = 0x58, + /*MAC_CFP_PERIOD = 0x59,*/ + /*MAC_LISTEN_INTERVAL = 0x5a,*/ + MAC_CFP_ATIM = 0x5c, /* beacon interval, CFP/ATIM duration */ + MAC_STATUS = 0x60, + /*MAC_TXP_TIMING = 0x62,*/ + /*MAC_STATUS = 0x63,*/ + MAC_CTL = 0x64, /* MAC_AES_KEY_DIS (8 bits), MAC_CTL (8 bits) */ + MAC_MEASURE = 0x68, /* actually 0x69 */ + /*MAC_REMAIN_BO = 0x6a,*/ + MAC_BEACON_FILT = 0x6c, /* actally 0x6d */ + /*MAC_BEACON_BO = 0x6e,*/ + MAC_STA2_ID0 = 0xb0, + MAC_STA2_ID1 = 0xb4, + MAC_STA3_ID0 = 0xb8, + MAC_STA3_ID1 = 0xbc, + + MAC_EEPROM_CTL = 0xf0, + MAC_EEPROM_DATA = 0xf8, + + MAC_SSID = 0x80, + + BEACON_FIFO = 0x85, /* dummy value used to select data fifo for beacon load */ +}; + + +#define MAC_SSID_LEN_MASK (0x000000ff) +#define MAC_REVISION_MASK(v) (((v) >> 16) & 0xffff) + +#define MAC_BEACON_INTERVAL_SHIFT (16) +#define MAC_BEACON_INTERVAL_MASK (0xffff0000) + +#define MAC_ATIM_PERIOD_MASK (0x0000ffff) + +#define MAC_LISTEN_INTERVAL_MASK (0x0000ffff) + +#define MAC_DTIM_PERIOD_SHIFT (24) +#define MAC_DTIM_PERIOD_MASK (0xff000000) + +#define MAC_DTIM_CFP_SHIFT (16) +#define MAC_DTIM_CFP_MASK (0x00ff0000) + +#define MAC_OFDM_BRS_MASK (0xff000000) +#define MAC_OFDM_BRS_SHIFT (24) +#define MAC_PSK_BRS_MASK (0x000f0000) +#define MAC_PSK_BRS_SHIFT (16) + +#define MAC_BEACON_BACKOFF_MASK (0x0000ffff) + +#define MAC_BRS_MASK (MAC_OFDM_BRS_MASK | MAC_PSK_BRS_MASK) + +#define MAC_CTL_TX_REQ (1) +#define MAC_CTL_BEACON_TX (1<<2) +#define MAC_CTL_IBSS (1<<4) +#define MAC_CTL_AES_DISABLE (1<<5) +#define MAC_CTL_MAC_FLTR (1<<6) +#define MAC_CTL_KEY0_DISABLE (1<<8) +#define MAC_CTL_KEY1_DISABLE (1<<9) +#define MAC_CTL_KEY2_DISABLE (1<<10) +#define MAC_CTL_KEY3_DISABLE (1<<11) + +#define MAC_EEPROM_CTL_WAIT_MS 21 + +/* + * RX packets look something like: + * <custom bus protocol header(s)> - protocol-dependent + * <rx_frame_hdr> - 4 bytes + * <plcp; either psk_cck_hdr or ofdm_hdr> - 4 bytes + * <mac header> - dealt with by the mac80211 stack, not the driver + * <data> + * + * TX packets are similar: + * <custom bus protocol header(s)> + * <tx_frame_hdr> - 4 bytes + * <plcp; either psk_cck_hdr or ofdm_hdr> - 4 bytes + * <mac header> + * <data> + */ + + + +// MAC type field values +#define TYPE_ASSOC_REQ 0x00 // Association request +#define TYPE_ASSOC_RESP 0x10 // Association response +#define TYPE_REASSOC_REQ 0x20 // Reassociation request +#define TYPE_REASSOC_RESP 0x30 // Reassociation response +#define TYPE_PROBE_REQ 0x40 // Probe request +#define TYPE_PROBE_RESP 0x50 // Probe response + +#define TYPE_BEACON 0x80 // Beacon +#define TYPE_ATIM 0x90 // Annoucement traffice indication +#define TYPE_DISASSOC 0xa0 // Disassociation +#define TYPE_AUTH 0xb0 // Authentication +#define TYPE_DEAUTH 0xc0 // Deauthentication +#define TYPE_ACTION 0xd0 // Action + +#define TYPE_RTS 0xb4 // Request to send +#define TYPE_CTS 0xc4 // Clear to send +#define TYPE_ACK 0xd4 // Acknowledgement +#define TYPE_PSPOLL 0xa4 // Power Save(PS)-Poll + +#define TYPE_DATA 0x08 // Data +#define TYPE_NULL_DATA 0x48 // Null Data + +struct tx_frame_hdr { +#if 1 + unsigned int modulation_type:8; + unsigned int length:9; + unsigned int pad:15; +#else + uint8_t modulation_type; + __le16 length:9; + unsigned int pad:15; +#endif +} __attribute__((packed)); + + +#define MOD_TYPE_PSKCCK 0x00 +#define MOD_TYPE_OFDM 0xee + +struct psk_cck_hdr { + uint8_t signal; /* x100Kbps */ + uint8_t service; + __le16 length; /* usecs */ +} __attribute__((packed)); + +/* PSK/CCK PLCP service field bits */ +#define PLCP_SERVICE_LOCKED 0x04 /* locked clocks */ +#define PLCP_SERVICE_MODSEL 0x08 /* modulation selection */ +#define PLCP_SERVICE_LENEXT 0x80 /* length extension */ + +struct ofdm_hdr { + unsigned int rate:4; + unsigned int pad_a:1; + unsigned int length:12; /* in bytes */ + unsigned int parity:1; + unsigned int pad_b:14; +} __attribute__((packed)); + + +struct rx_frame_hdr { + uint8_t modulation_type; + unsigned int rssi_variable_gain_attenuator:5; + unsigned int rssi_low_noise_amp:2; + unsigned int antenna:1; + __be16 freq_offset; + union + { + struct psk_cck_hdr psk; + struct ofdm_hdr ofdm; + } mod; +} __attribute__((packed)); + +typedef struct +{ + unsigned type :8; // Type, subtype, version + unsigned toDS :1; // To distribution service (AP) + unsigned fromDS :1; // From distribution service (AP) + unsigned moreFrag :1; // More fragments + unsigned retry :1; // Retransmission + unsigned pwrMgt :1; // Power management state + unsigned moreData :1; // More data buffered + unsigned protectd :1; // Encrypted + unsigned order :1; // Strictly ordered +} frameControlFieldType_t; + +#define WLN_ADDR_SIZE (6) + +typedef unsigned char MacAddr[WLN_ADDR_SIZE]; + + +#define PACKED_H +#define PACKED_F __attribute__ ((packed)) + +typedef PACKED_H struct { + unsigned type :8; // Type, subtype, version +#ifdef BIG_ENDIAN + unsigned order :1; // Strictly ordered + unsigned protected :1; // Encrypted + unsigned moreData :1; // More data buffered + unsigned pwrMgt :1; // Power management state + unsigned retry :1; // Retransmission + unsigned moreFrag :1; // More fragments + unsigned fromDS :1; // From distribution service (AP) + unsigned toDS :1; // To distribution service (AP) +#else + unsigned toDS :1; // To distribution service (AP) + unsigned fromDS :1; // From distribution service (AP) + unsigned moreFrag :1; // More fragments + unsigned retry :1; // Retransmission + unsigned pwrMgt :1; // Power management state + unsigned moreData :1; // More data buffered + unsigned protected :1; // Encrypted + unsigned order :1; // Strictly ordered +#endif +} PACKED_F FrameControl_t; + + +// Sequence control field +// Need to swap bytes on BIG_ENDIAN +typedef PACKED_H struct { +#ifdef BIG_ENDIAN + unsigned seq :12; // Sequence number + unsigned frag :4; // Fragment number +#else + unsigned frag :4; // Fragment number + unsigned seq :12; // Sequence number +#endif +} PACKED_F SeqControl; + +// Union of sequence control types +typedef PACKED_H union { + SeqControl sq; // Sequence control fields + unsigned short sq16; // Sequence control as 16-bit int (needs byte swap) +} PACKED_F SeqControlU; + + + +typedef PACKED_H struct { + FrameControl_t fc; // Frame control + unsigned short duration; // Duration/ID (needs byte swap) + MacAddr addr1; // Address 1 + MacAddr addr2; // Address 2 + MacAddr addr3; // Address 3 + SeqControlU squ; // Sequence control fields +} PACKED_F _80211HeaderType; + +typedef PACKED_H struct { + FrameControl_t fc; // Frame control + unsigned short aid; // association identifier + MacAddr addr1; // Address 1 + MacAddr addr2; // Address 2 +} PACKED_F _80211PSPollType; + +#define _80211_HEADER_LENGTH (sizeof(_80211HeaderType)) +#define TX_HEADER_LENGTH (sizeof(struct ofdm_hdr) + sizeof(struct tx_frame_hdr)) +/* FIFO sizes in bytes */ +#define TX_FIFO_SIZE 1792 +#define RX_FIFO_SIZE 2048 + +#define RATE_MASK_BASIC 0x0153 +#define RATE_MASK_OFDM 0x0ff0 +#define RATE_MASK_PSK_CCK 0x000f + +#define BEACON_INT 100 /* in TU */ + + +#define DEFAULT_CW_MIN 32 // Min contention window size +#define DEFAULT_CW_MAX 1024 // Max contention window size + +#define ASLOT_TIME 20 +#endif |