rtl818x.h

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/*
 * Definitions for RTL818x hardware
 *
 * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
 * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
 *
 * Modified for gPXE, June 2009, by Joshua Oreman <oremanj@rwcr.net>
 *
 * Based on the r8187 driver, which is:
 * Copyright 2005 Andrea Merello <andreamrl@tiscali.it>, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef RTL818X_H
#define RTL818X_H

#include <gpxe/spi_bit.h>
#include <gpxe/tables.h>

FILE_LICENCE(GPL2_ONLY);

struct rtl818x_csr {
        u8      MAC[6];
        u8      reserved_0[2];
        u32     MAR[2];
        u8      RX_FIFO_COUNT;
        u8      reserved_1;
        u8      TX_FIFO_COUNT;
        u8      BQREQ;
        u8      reserved_2[4];
        u32     TSFT[2];
        u32     TLPDA;
        u32     TNPDA;
        u32     THPDA;
        u16     BRSR;
        u8      BSSID[6];
        u8      RESP_RATE;
        u8      EIFS;
        u8      reserved_3[1];
        u8      CMD;
#define RTL818X_CMD_TX_ENABLE           (1 << 2)
#define RTL818X_CMD_RX_ENABLE           (1 << 3)
#define RTL818X_CMD_RESET               (1 << 4)
        u8      reserved_4[4];
        u16     INT_MASK;
        u16     INT_STATUS;
#define RTL818X_INT_RX_OK               (1 <<  0)
#define RTL818X_INT_RX_ERR              (1 <<  1)
#define RTL818X_INT_TXL_OK              (1 <<  2)
#define RTL818X_INT_TXL_ERR             (1 <<  3)
#define RTL818X_INT_RX_DU               (1 <<  4)
#define RTL818X_INT_RX_FO               (1 <<  5)
#define RTL818X_INT_TXN_OK              (1 <<  6)
#define RTL818X_INT_TXN_ERR             (1 <<  7)
#define RTL818X_INT_TXH_OK              (1 <<  8)
#define RTL818X_INT_TXH_ERR             (1 <<  9)
#define RTL818X_INT_TXB_OK              (1 << 10)
#define RTL818X_INT_TXB_ERR             (1 << 11)
#define RTL818X_INT_ATIM                (1 << 12)
#define RTL818X_INT_BEACON              (1 << 13)
#define RTL818X_INT_TIME_OUT            (1 << 14)
#define RTL818X_INT_TX_FO               (1 << 15)
        u32     TX_CONF;
#define RTL818X_TX_CONF_LOOPBACK_MAC    (1 << 17)
#define RTL818X_TX_CONF_LOOPBACK_CONT   (3 << 17)
#define RTL818X_TX_CONF_NO_ICV          (1 << 19)
#define RTL818X_TX_CONF_DISCW           (1 << 20)
#define RTL818X_TX_CONF_SAT_HWPLCP      (1 << 24)
#define RTL818X_TX_CONF_R8180_ABCD      (2 << 25)
#define RTL818X_TX_CONF_R8180_F         (3 << 25)
#define RTL818X_TX_CONF_R8185_ABC       (4 << 25)
#define RTL818X_TX_CONF_R8185_D         (5 << 25)
#define RTL818X_TX_CONF_R8187vD         (5 << 25)
#define RTL818X_TX_CONF_R8187vD_B       (6 << 25)
#define RTL818X_TX_CONF_HWVER_MASK      (7 << 25)
#define RTL818X_TX_CONF_DISREQQSIZE     (1 << 28)
#define RTL818X_TX_CONF_PROBE_DTS       (1 << 29)
#define RTL818X_TX_CONF_HW_SEQNUM       (1 << 30)
#define RTL818X_TX_CONF_CW_MIN          (1 << 31)
        u32     RX_CONF;
#define RTL818X_RX_CONF_MONITOR         (1 <<  0)
#define RTL818X_RX_CONF_NICMAC          (1 <<  1)
#define RTL818X_RX_CONF_MULTICAST       (1 <<  2)
#define RTL818X_RX_CONF_BROADCAST       (1 <<  3)
#define RTL818X_RX_CONF_FCS             (1 <<  5)
#define RTL818X_RX_CONF_DATA            (1 << 18)
#define RTL818X_RX_CONF_CTRL            (1 << 19)
#define RTL818X_RX_CONF_MGMT            (1 << 20)
#define RTL818X_RX_CONF_ADDR3           (1 << 21)
#define RTL818X_RX_CONF_PM              (1 << 22)
#define RTL818X_RX_CONF_BSSID           (1 << 23)
#define RTL818X_RX_CONF_RX_AUTORESETPHY (1 << 28)
#define RTL818X_RX_CONF_CSDM1           (1 << 29)
#define RTL818X_RX_CONF_CSDM2           (1 << 30)
#define RTL818X_RX_CONF_ONLYERLPKT      (1 << 31)
        u32     INT_TIMEOUT;
        u32     TBDA;
        u8      EEPROM_CMD;
#define RTL818X_EEPROM_CMD_READ         (1 << 0)
#define RTL818X_EEPROM_CMD_WRITE        (1 << 1)
#define RTL818X_EEPROM_CMD_CK           (1 << 2)
#define RTL818X_EEPROM_CMD_CS           (1 << 3)
#define RTL818X_EEPROM_CMD_NORMAL       (0 << 6)
#define RTL818X_EEPROM_CMD_LOAD         (1 << 6)
#define RTL818X_EEPROM_CMD_PROGRAM      (2 << 6)
#define RTL818X_EEPROM_CMD_CONFIG       (3 << 6)
        u8      CONFIG0;
        u8      CONFIG1;
        u8      CONFIG2;
#define RTL818X_CONFIG2_ANTENNA_DIV     (1 << 6)
        u32     ANAPARAM;
        u8      MSR;
#define RTL818X_MSR_NO_LINK             (0 << 2)
#define RTL818X_MSR_ADHOC               (1 << 2)
#define RTL818X_MSR_INFRA               (2 << 2)
#define RTL818X_MSR_MASTER              (3 << 2)
#define RTL818X_MSR_ENEDCA              (4 << 2)
        u8      CONFIG3;
#define RTL818X_CONFIG3_ANAPARAM_WRITE  (1 << 6)
#define RTL818X_CONFIG3_GNT_SELECT      (1 << 7)
        u8      CONFIG4;
#define RTL818X_CONFIG4_POWEROFF        (1 << 6)
#define RTL818X_CONFIG4_VCOOFF          (1 << 7)
        u8      TESTR;
        u8      reserved_9[2];
        u8      PGSELECT;
        u8      SECURITY;
        u32     ANAPARAM2;
        u8      reserved_10[12];
        u16     BEACON_INTERVAL;
        u16     ATIM_WND;
        u16     BEACON_INTERVAL_TIME;
        u16     ATIMTR_INTERVAL;
        u8      PHY_DELAY;
        u8      CARRIER_SENSE_COUNTER;
        u8      reserved_11[2];
        u8      PHY[4];
        u16     RFPinsOutput;
        u16     RFPinsEnable;
        u16     RFPinsSelect;
        u16     RFPinsInput;
        u32     RF_PARA;
        u32     RF_TIMING;
        u8      GP_ENABLE;
        u8      GPIO;
        u8      reserved_12[2];
        u32     HSSI_PARA;
        u8      reserved_13[4];
        u8      TX_AGC_CTL;
#define RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT         (1 << 0)
#define RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT       (1 << 1)
#define RTL818X_TX_AGC_CTL_FEEDBACK_ANT                 (1 << 2)
        u8      TX_GAIN_CCK;
        u8      TX_GAIN_OFDM;
        u8      TX_ANTENNA;
        u8      reserved_14[16];
        u8      WPA_CONF;
        u8      reserved_15[3];
        u8      SIFS;
        u8      DIFS;
        u8      SLOT;
        u8      reserved_16[5];
        u8      CW_CONF;
#define RTL818X_CW_CONF_PERPACKET_CW_SHIFT      (1 << 0)
#define RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT   (1 << 1)
        u8      CW_VAL;
        u8      RATE_FALLBACK;
#define RTL818X_RATE_FALLBACK_ENABLE    (1 << 7)
        u8      ACM_CONTROL;
        u8      reserved_17[24];
        u8      CONFIG5;
        u8      TX_DMA_POLLING;
        u8      reserved_18[2];
        u16     CWR;
        u8      RETRY_CTR;
        u8      reserved_19[3];
        u16     INT_MIG;
/* RTL818X_R8187B_*: magic numbers from ioregisters */
#define RTL818X_R8187B_B        0
#define RTL818X_R8187B_D        1
#define RTL818X_R8187B_E        2
        u32     RDSAR;
        u16     TID_AC_MAP;
        u8      reserved_20[4];
        u8      ANAPARAM3;
        u8      reserved_21[5];
        u16     FEMR;
        u8      reserved_22[4];
        u16     TALLY_CNT;
        u8      TALLY_SEL;
} __attribute__((packed));

#define MAX_RX_SIZE IEEE80211_MAX_FRAME_LEN

#define RF_PARAM_ANALOGPHY      (1 << 0)
#define RF_PARAM_ANTBDEFAULT    (1 << 1)
#define RF_PARAM_CARRIERSENSE1  (1 << 2)
#define RF_PARAM_CARRIERSENSE2  (1 << 3)

#define BB_ANTATTEN_CHAN14      0x0C
#define BB_ANTENNA_B            0x40

#define BB_HOST_BANG            (1 << 30)
#define BB_HOST_BANG_EN         (1 << 2)
#define BB_HOST_BANG_CLK        (1 << 1)
#define BB_HOST_BANG_DATA       1

#define ANAPARAM_TXDACOFF_SHIFT 27
#define ANAPARAM_PWR0_SHIFT     28
#define ANAPARAM_PWR0_MASK      (0x07 << ANAPARAM_PWR0_SHIFT)
#define ANAPARAM_PWR1_SHIFT     20
#define ANAPARAM_PWR1_MASK      (0x7F << ANAPARAM_PWR1_SHIFT)

#define RTL818X_RX_RING_SIZE    8 /* doesn't have to be a power of 2 */
#define RTL818X_TX_RING_SIZE    8 /* nor this [but 2^n is very slightly faster] */
#define RTL818X_RING_ALIGN      256

#define RTL818X_MAX_RETRIES     4

enum rtl818x_tx_desc_flags {
        RTL818X_TX_DESC_FLAG_NO_ENC     = (1 << 15),
        RTL818X_TX_DESC_FLAG_TX_OK      = (1 << 15),
        RTL818X_TX_DESC_FLAG_SPLCP      = (1 << 16),
        RTL818X_TX_DESC_FLAG_RX_UNDER   = (1 << 16),
        RTL818X_TX_DESC_FLAG_MOREFRAG   = (1 << 17),
        RTL818X_TX_DESC_FLAG_CTS        = (1 << 18),
        RTL818X_TX_DESC_FLAG_RTS        = (1 << 23),
        RTL818X_TX_DESC_FLAG_LS         = (1 << 28),
        RTL818X_TX_DESC_FLAG_FS         = (1 << 29),
        RTL818X_TX_DESC_FLAG_DMA        = (1 << 30),
        RTL818X_TX_DESC_FLAG_OWN        = (1 << 31)
};

struct rtl818x_tx_desc {
        u32 flags;
        u16 rts_duration;
        u16 plcp_len;
        u32 tx_buf;
        u32 frame_len;
        u32 next_tx_desc;
        u8 cw;
        u8 retry_limit;
        u8 agc;
        u8 flags2;
        u32 reserved[2];
} __attribute__ ((packed));

enum rtl818x_rx_desc_flags {
        RTL818X_RX_DESC_FLAG_ICV_ERR    = (1 << 12),
        RTL818X_RX_DESC_FLAG_CRC32_ERR  = (1 << 13),
        RTL818X_RX_DESC_FLAG_PM         = (1 << 14),
        RTL818X_RX_DESC_FLAG_RX_ERR     = (1 << 15),
        RTL818X_RX_DESC_FLAG_BCAST      = (1 << 16),
        RTL818X_RX_DESC_FLAG_PAM        = (1 << 17),
        RTL818X_RX_DESC_FLAG_MCAST      = (1 << 18),
        RTL818X_RX_DESC_FLAG_QOS        = (1 << 19), /* RTL8187(B) only */
        RTL818X_RX_DESC_FLAG_TRSW       = (1 << 24), /* RTL8187(B) only */
        RTL818X_RX_DESC_FLAG_SPLCP      = (1 << 25),
        RTL818X_RX_DESC_FLAG_FOF        = (1 << 26),
        RTL818X_RX_DESC_FLAG_DMA_FAIL   = (1 << 27),
        RTL818X_RX_DESC_FLAG_LS         = (1 << 28),
        RTL818X_RX_DESC_FLAG_FS         = (1 << 29),
        RTL818X_RX_DESC_FLAG_EOR        = (1 << 30),
        RTL818X_RX_DESC_FLAG_OWN        = (1 << 31)
};

struct rtl818x_rx_desc {
        u32 flags;
        u32 flags2;
        union {
                u32 rx_buf;
                u64 tsft;
        };
} __attribute__ ((packed));

struct rtl818x_priv {
        struct rtl818x_csr *map;
        const struct rtl818x_rf_ops *rf;
        int rf_flag; /* whatever RF driver wishes to use it for */
        int hw_rate;
        int hw_rtscts_rate;

        struct spi_bit_basher spibit;
        struct spi_device eeprom;

        struct rtl818x_rx_desc *rx_ring;
        u32 rx_ring_dma;
        unsigned int rx_idx;    /* next desc to be filled by card */
        struct io_buffer *rx_buf[RTL818X_RX_RING_SIZE];

        struct rtl818x_tx_desc *tx_ring;
        u32 tx_ring_dma;
        unsigned int tx_cons;   /* next desc to be filled by card */
        unsigned int tx_prod;   /* next desc to be filled by driver */
        struct io_buffer *tx_buf[RTL818X_TX_RING_SIZE];

        struct pci_device *pdev;
        u32 rx_conf;

        u16 txpower[14];

        int r8185;
        u32 anaparam;
        u16 rfparam;
        u8 csthreshold;
};

void rtl818x_write_phy(struct net80211_device *dev, u8 addr, u32 data);
void rtl818x_set_anaparam(struct rtl818x_priv *priv, u32 anaparam);

static inline u8 rtl818x_ioread8(struct rtl818x_priv *priv __unused, u8 *addr)
{
        return inb(addr);
}

static inline u16 rtl818x_ioread16(struct rtl818x_priv *priv __unused, u16 *addr)
{
        return inw(addr);
}

static inline u32 rtl818x_ioread32(struct rtl818x_priv *priv __unused, u32 *addr)
{
        return inl(addr);
}

static inline void rtl818x_iowrite8(struct rtl818x_priv *priv __unused,
                                    u8 *addr, u8 val)
{
        outb(val, addr);
}

static inline void rtl818x_iowrite16(struct rtl818x_priv *priv __unused,
                                     u16 *addr, u16 val)
{
        outw(val, addr);
}

static inline void rtl818x_iowrite32(struct rtl818x_priv *priv __unused,
                                     u32 *addr, u32 val)
{
        outl(val, addr);
}

#define RTL818X_RF_DRIVERS __table(struct rtl818x_rf_ops, "rtl818x_rf_drivers")
#define __rtl818x_rf_driver __table_entry(RTL818X_RF_DRIVERS, 01)

struct rtl818x_rf_ops {
        char *name;
        u8 id;                  /* as identified in EEPROM */
        void (*init)(struct net80211_device *dev);
        void (*stop)(struct net80211_device *dev);
        void (*set_chan)(struct net80211_device *dev, struct net80211_channel *chan);
        void (*conf_erp)(struct net80211_device *dev); /* set based on dev->erp_flags */
};

#endif /* RTL818X_H */