Merge with Linux 2.2.8.

1 files changed, 381 insertions, 0 deletions

diff --git a/drivers/net/sunbmac.h b/drivers/net/sunbmac.h
new file mode 100644
index 000000000..9284654fc
--- /dev/null
+++ b/drivers/net/sunbmac.h
@@ -0,0 +1,381 @@
+/* sunbmac.h: Defines for the Sun "Big MAC" 100baseT ethernet cards.
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SUNBMAC_H
+#define _SUNBMAC_H
+
+/* QEC global registers. */
+struct qe_globreg {
+	volatile unsigned int ctrl;      /* Control                  */
+	volatile unsigned int stat;      /* Status                   */
+	volatile unsigned int psize;     /* Packet Size              */
+	volatile unsigned int msize;     /* Local-mem size (64K)     */
+	volatile unsigned int rsize;     /* Receive partition size   */
+	volatile unsigned int tsize;     /* Transmit partition size  */
+};
+
+#define GLOB_CTRL_MMODE       0x40000000 /* MACE qec mode            */
+#define GLOB_CTRL_BMODE       0x10000000 /* BigMAC qec mode          */
+#define GLOB_CTRL_EPAR        0x00000020 /* Enable parity            */
+#define GLOB_CTRL_ACNTRL      0x00000018 /* SBUS arbitration control */
+#define GLOB_CTRL_B64         0x00000004 /* 64 byte dvma bursts      */
+#define GLOB_CTRL_B32         0x00000002 /* 32 byte dvma bursts      */
+#define GLOB_CTRL_B16         0x00000000 /* 16 byte dvma bursts      */
+#define GLOB_CTRL_RESET       0x00000001 /* Reset the QEC            */
+
+#define GLOB_STAT_TX          0x00000008 /* BigMAC Transmit IRQ      */
+#define GLOB_STAT_RX          0x00000004 /* BigMAC Receive IRQ       */
+#define GLOB_STAT_BM          0x00000002 /* BigMAC Global IRQ        */
+#define GLOB_STAT_ER          0x00000001 /* BigMAC Error IRQ         */
+
+#define GLOB_PSIZE_2048       0x00       /* 2k packet size           */
+#define GLOB_PSIZE_4096       0x01       /* 4k packet size           */
+#define GLOB_PSIZE_6144       0x10       /* 6k packet size           */
+#define GLOB_PSIZE_8192       0x11       /* 8k packet size           */
+
+/* QEC BigMAC channel registers. */
+struct qe_creg {
+	volatile unsigned int ctrl;       /* Control                     */
+	volatile unsigned int stat;       /* Status                      */
+	volatile unsigned int rxds;       /* RX descriptor ring ptr      */
+	volatile unsigned int txds;       /* TX descriptor ring ptr      */
+	volatile unsigned int rimask;     /* RX Interrupt Mask           */
+	volatile unsigned int timask;     /* TX Interrupt Mask           */
+	volatile unsigned int qmask;      /* QEC Error Interrupt Mask    */
+	volatile unsigned int bmask;      /* BigMAC Error Interrupt Mask */
+	volatile unsigned int rxwbufptr;  /* Local memory rx write ptr   */
+	volatile unsigned int rxrbufptr;  /* Local memory rx read ptr    */
+	volatile unsigned int txwbufptr;  /* Local memory tx write ptr   */
+	volatile unsigned int txrbufptr;  /* Local memory tx read ptr    */
+	volatile unsigned int ccnt;       /* Collision Counter           */
+};
+
+#define CREG_CTRL_TWAKEUP     0x00000001  /* Transmitter Wakeup, 'go'. */
+
+#define CREG_STAT_BERROR      0x80000000  /* BigMAC error              */
+#define CREG_STAT_TXIRQ       0x00200000  /* Transmit Interrupt        */
+#define CREG_STAT_TXDERROR    0x00080000  /* TX Descriptor is bogus    */
+#define CREG_STAT_TXLERR      0x00040000  /* Late Transmit Error       */
+#define CREG_STAT_TXPERR      0x00020000  /* Transmit Parity Error     */
+#define CREG_STAT_TXSERR      0x00010000  /* Transmit SBUS error ack   */
+#define CREG_STAT_RXIRQ       0x00000020  /* Receive Interrupt         */
+#define CREG_STAT_RXDROP      0x00000010  /* Dropped a RX'd packet     */
+#define CREG_STAT_RXSMALL     0x00000008  /* Receive buffer too small  */
+#define CREG_STAT_RXLERR      0x00000004  /* Receive Late Error        */
+#define CREG_STAT_RXPERR      0x00000002  /* Receive Parity Error      */
+#define CREG_STAT_RXSERR      0x00000001  /* Receive SBUS Error ACK    */
+
+#define CREG_STAT_ERRORS      (CREG_STAT_BERROR|CREG_STAT_TXDERROR|CREG_STAT_TXLERR|   \
+                               CREG_STAT_TXPERR|CREG_STAT_TXSERR|CREG_STAT_RXDROP|     \
+                               CREG_STAT_RXSMALL|CREG_STAT_RXLERR|CREG_STAT_RXPERR|    \
+                               CREG_STAT_RXSERR)
+
+#define CREG_QMASK_TXDERROR   0x00080000  /* TXD error                 */
+#define CREG_QMASK_TXLERR     0x00040000  /* TX late error             */
+#define CREG_QMASK_TXPERR     0x00020000  /* TX parity error           */
+#define CREG_QMASK_TXSERR     0x00010000  /* TX sbus error ack         */
+#define CREG_QMASK_RXDROP     0x00000010  /* RX drop                   */
+#define CREG_QMASK_RXBERROR   0x00000008  /* RX buffer error           */
+#define CREG_QMASK_RXLEERR    0x00000004  /* RX late error             */
+#define CREG_QMASK_RXPERR     0x00000002  /* RX parity error           */
+#define CREG_QMASK_RXSERR     0x00000001  /* RX sbus error ack         */
+
+struct BIG_MAC_regs {
+	volatile unsigned int xif_cfg;		/* XIF config register                */
+	volatile unsigned int _unused[63];	/* Reserved...                        */
+	volatile unsigned int status;		/* Status register, clear on read     */
+	volatile unsigned int imask;		/* Interrupt mask register            */
+	volatile unsigned int _unused2[64];	/* Reserved...                        */
+	volatile unsigned int tx_swreset;	/* Transmitter software reset         */
+	volatile unsigned int tx_cfg;           /* Transmitter config register        */
+	volatile unsigned int ipkt_gap1;	/* Inter-packet gap 1                 */
+	volatile unsigned int ipkt_gap2;	/* Inter-packet gap 2                 */
+	volatile unsigned int attempt_limit;	/* Transmit attempt limit             */
+	volatile unsigned int stime;		/* Transmit slot time                 */
+	volatile unsigned int preamble_len;	/* Size of transmit preamble          */
+	volatile unsigned int preamble_pattern;	/* Pattern for transmit preamble      */
+	volatile unsigned int tx_sframe_delim;	/* Transmit delimiter                 */
+	volatile unsigned int jsize;		/* Toe jam...                         */
+	volatile unsigned int tx_pkt_max;	/* Transmit max pkt size              */
+	volatile unsigned int tx_pkt_min;	/* Transmit min pkt size              */
+	volatile unsigned int peak_attempt;	/* Count of transmit peak attempts    */
+	volatile unsigned int dt_ctr;		/* Transmit defer timer               */
+	volatile unsigned int nc_ctr;           /* Transmit normal-collision counter  */
+	volatile unsigned int fc_ctr;           /* Transmit first-collision counter   */
+	volatile unsigned int ex_ctr;           /* Transmit excess-collision counter  */
+	volatile unsigned int lt_ctr;           /* Transmit late-collision counter    */
+	volatile unsigned int rand_seed;        /* Transmit random number seed        */
+	volatile unsigned int tx_smachine;      /* Transmit state machine             */
+	volatile unsigned int _unused3[44];     /* Reserved                           */
+	volatile unsigned int rx_swreset;       /* Receiver software reset            */
+	volatile unsigned int rx_cfg;           /* Receiver config register           */
+	volatile unsigned int rx_pkt_max;       /* Receive max pkt size               */
+	volatile unsigned int rx_pkt_min;       /* Receive min pkt size               */
+	volatile unsigned int mac_addr2;        /* Ether address register 2           */
+	volatile unsigned int mac_addr1;        /* Ether address register 1           */
+	volatile unsigned int mac_addr0;        /* Ether address register 0           */
+	volatile unsigned int fr_ctr;           /* Receive frame receive counter      */
+	volatile unsigned int gle_ctr;          /* Receive giant-length error counter */
+	volatile unsigned int unale_ctr;        /* Receive unaligned error counter    */
+	volatile unsigned int rcrce_ctr;        /* Receive CRC error counter          */
+	volatile unsigned int rx_smachine;      /* Receiver state machine             */
+	volatile unsigned int rx_cvalid;        /* Receiver code violation            */
+	volatile unsigned int _unused4;         /* Reserved...                        */
+	volatile unsigned int htable3;          /* Hash table 3                       */
+	volatile unsigned int htable2;          /* Hash table 2                       */
+	volatile unsigned int htable1;          /* Hash table 1                       */
+	volatile unsigned int htable0;          /* Hash table 0                       */
+	volatile unsigned int afilter2;         /* Address filter 2                   */
+	volatile unsigned int afilter1;         /* Address filter 1                   */
+	volatile unsigned int afilter0;         /* Address filter 0                   */
+	volatile unsigned int afilter_mask;     /* Address filter mask                */
+};
+
+/* BigMac XIF config register. */
+#define BIGMAC_XCFG_ODENABLE   0x00000001 /* Output driver enable                     */
+#define BIGMAC_XCFG_RESV       0x00000002 /* Reserved, write always as 1              */
+#define BIGMAC_XCFG_MLBACK     0x00000004 /* Loopback-mode MII enable                 */
+#define BIGMAC_XCFG_SMODE      0x00000008 /* Enable serial mode                       */
+
+/* BigMAC status register. */
+#define BIGMAC_STAT_GOTFRAME   0x00000001 /* Received a frame                         */
+#define BIGMAC_STAT_RCNTEXP    0x00000002 /* Receive frame counter expired            */
+#define BIGMAC_STAT_ACNTEXP    0x00000004 /* Align-error counter expired              */
+#define BIGMAC_STAT_CCNTEXP    0x00000008 /* CRC-error counter expired                */
+#define BIGMAC_STAT_LCNTEXP    0x00000010 /* Length-error counter expired             */
+#define BIGMAC_STAT_RFIFOVF    0x00000020 /* Receive FIFO overflow                    */
+#define BIGMAC_STAT_CVCNTEXP   0x00000040 /* Code-violation counter expired           */
+#define BIGMAC_STAT_SENTFRAME  0x00000100 /* Transmitted a frame                      */
+#define BIGMAC_STAT_TFIFO_UND  0x00000200 /* Transmit FIFO underrun                   */
+#define BIGMAC_STAT_MAXPKTERR  0x00000400 /* Max-packet size error                    */
+#define BIGMAC_STAT_NCNTEXP    0x00000800 /* Normal-collision counter expired         */
+#define BIGMAC_STAT_ECNTEXP    0x00001000 /* Excess-collision counter expired         */
+#define BIGMAC_STAT_LCCNTEXP   0x00002000 /* Late-collision counter expired           */
+#define BIGMAC_STAT_FCNTEXP    0x00004000 /* First-collision counter expired          */
+#define BIGMAC_STAT_DTIMEXP    0x00008000 /* Defer-timer expired                      */
+
+/* BigMAC interrupt mask register. */
+#define BIGMAC_IMASK_GOTFRAME  0x00000001 /* Received a frame                         */
+#define BIGMAC_IMASK_RCNTEXP   0x00000002 /* Receive frame counter expired            */
+#define BIGMAC_IMASK_ACNTEXP   0x00000004 /* Align-error counter expired              */
+#define BIGMAC_IMASK_CCNTEXP   0x00000008 /* CRC-error counter expired                */
+#define BIGMAC_IMASK_LCNTEXP   0x00000010 /* Length-error counter expired             */
+#define BIGMAC_IMASK_RFIFOVF   0x00000020 /* Receive FIFO overflow                    */
+#define BIGMAC_IMASK_CVCNTEXP  0x00000040 /* Code-violation counter expired           */
+#define BIGMAC_IMASK_SENTFRAME 0x00000100 /* Transmitted a frame                      */
+#define BIGMAC_IMASK_TFIFO_UND 0x00000200 /* Transmit FIFO underrun                   */
+#define BIGMAC_IMASK_MAXPKTERR 0x00000400 /* Max-packet size error                    */
+#define BIGMAC_IMASK_NCNTEXP   0x00000800 /* Normal-collision counter expired         */
+#define BIGMAC_IMASK_ECNTEXP   0x00001000 /* Excess-collision counter expired         */
+#define BIGMAC_IMASK_LCCNTEXP  0x00002000 /* Late-collision counter expired           */
+#define BIGMAC_IMASK_FCNTEXP   0x00004000 /* First-collision counter expired          */
+#define BIGMAC_IMASK_DTIMEXP   0x00008000 /* Defer-timer expired                      */
+
+/* BigMac transmit config register. */
+#define BIGMAC_TXCFG_ENABLE    0x00000001 /* Enable the transmitter                   */
+#define BIGMAC_TXCFG_FIFO      0x00000010 /* Default tx fthresh...                    */
+#define BIGMAC_TXCFG_SMODE     0x00000020 /* Enable slow transmit mode                */
+#define BIGMAC_TXCFG_CIGN      0x00000040 /* Ignore transmit collisions               */
+#define BIGMAC_TXCFG_FCSOFF    0x00000080 /* Do not emit FCS                          */
+#define BIGMAC_TXCFG_DBACKOFF  0x00000100 /* Disable backoff                          */
+#define BIGMAC_TXCFG_FULLDPLX  0x00000200 /* Enable full-duplex                       */
+
+/* BigMac receive config register. */
+#define BIGMAC_RXCFG_ENABLE    0x00000001 /* Enable the receiver                      */
+#define BIGMAC_RXCFG_FIFO      0x0000000e /* Default rx fthresh...                    */
+#define BIGMAC_RXCFG_PSTRIP    0x00000020 /* Pad byte strip enable                    */
+#define BIGMAC_RXCFG_PMISC     0x00000040 /* Enable promiscous mode                   */
+#define BIGMAC_RXCFG_DERR      0x00000080 /* Disable error checking                   */
+#define BIGMAC_RXCFG_DCRCS     0x00000100 /* Disable CRC stripping                    */
+#define BIGMAC_RXCFG_ME        0x00000200 /* Receive packets addressed to me          */
+#define BIGMAC_RXCFG_PGRP      0x00000400 /* Enable promisc group mode                */
+#define BIGMAC_RXCFG_HENABLE   0x00000800 /* Enable the hash filter                   */
+#define BIGMAC_RXCFG_AENABLE   0x00001000 /* Enable the address filter                */
+
+/* The BigMAC PHY transceiver.  Not nearly as sophisticated as the happy meal
+ * one.  But it does have the "bit banger", oh baby.
+ */
+struct bmac_tcvr {
+	unsigned int	tcvr_pal;
+	unsigned int    mgmt_pal;
+};
+
+/* Frame commands. */
+#define FRAME_WRITE           0x50020000
+#define FRAME_READ            0x60020000
+
+/* Tranceiver registers. */
+#define TCVR_PAL_SERIAL       0x00000001 /* Enable serial mode              */
+#define TCVR_PAL_EXTLBACK     0x00000002 /* Enable external loopback        */
+#define TCVR_PAL_MSENSE       0x00000004 /* Media sense                     */
+#define TCVR_PAL_LTENABLE     0x00000008 /* Link test enable                */
+#define TCVR_PAL_LTSTATUS     0x00000010 /* Link test status  (P1 only)     */
+
+/* Management PAL. */
+#define MGMT_PAL_DCLOCK       0x00000001 /* Data clock                      */
+#define MGMT_PAL_OENAB        0x00000002 /* Output enabler                  */
+#define MGMT_PAL_MDIO         0x00000004 /* MDIO Data/attached              */
+#define MGMT_PAL_TIMEO        0x00000008 /* Transmit enable timeout error   */
+#define MGMT_PAL_EXT_MDIO     MGMT_PAL_MDIO
+#define MGMT_PAL_INT_MDIO     MGMT_PAL_TIMEO
+
+/* Here are some PHY addresses. */
+#define BIGMAC_PHY_EXTERNAL   0 /* External transceiver */
+#define BIGMAC_PHY_INTERNAL   1 /* Internal transceiver */
+
+/* PHY registers */
+#define BIGMAC_BMCR           0x00 /* Basic mode control register	*/
+#define BIGMAC_BMSR           0x01 /* Basic mode status register	*/
+
+/* BMCR bits */
+#define BMCR_ISOLATE            0x0400  /* Disconnect DP83840 from MII */
+#define BMCR_PDOWN              0x0800  /* Powerdown the DP83840       */
+#define BMCR_ANENABLE           0x1000  /* Enable auto negotiation     */
+#define BMCR_SPEED100           0x2000  /* Select 100Mbps              */
+#define BMCR_LOOPBACK           0x4000  /* TXD loopback bits           */
+#define BMCR_RESET              0x8000  /* Reset the DP83840           */
+
+/* BMSR bits */
+#define BMSR_ERCAP              0x0001  /* Ext-reg capability          */
+#define BMSR_JCD                0x0002  /* Jabber detected             */
+#define BMSR_LSTATUS            0x0004  /* Link status                 */
+
+/* Ring descriptors and such, same as Quad Ethernet. */
+struct be_rxd {
+	unsigned int rx_flags;
+	unsigned int rx_addr;
+};
+
+#define RXD_OWN      0x80000000 /* Ownership.      */
+#define RXD_UPDATE   0x10000000 /* Being Updated?  */
+#define RXD_LENGTH   0x000007ff /* Packet Length.  */
+
+struct be_txd {
+	unsigned int tx_flags;
+	unsigned int tx_addr;
+};
+
+#define TXD_OWN      0x80000000 /* Ownership.      */
+#define TXD_SOP      0x40000000 /* Start Of Packet */
+#define TXD_EOP      0x20000000 /* End Of Packet   */
+#define TXD_UPDATE   0x10000000 /* Being Updated?  */
+#define TXD_LENGTH   0x000007ff /* Packet Length.  */
+
+#define TX_RING_MAXSIZE   256
+#define RX_RING_MAXSIZE   256
+
+#define TX_RING_SIZE      256
+#define RX_RING_SIZE      256
+
+#define NEXT_RX(num)       (((num) + 1) & (RX_RING_SIZE - 1))
+#define NEXT_TX(num)       (((num) + 1) & (TX_RING_SIZE - 1))
+#define PREV_RX(num)       (((num) - 1) & (RX_RING_SIZE - 1))
+#define PREV_TX(num)       (((num) - 1) & (TX_RING_SIZE - 1))
+
+#define TX_BUFFS_AVAIL(bp)                                    \
+        (((bp)->tx_old <= (bp)->tx_new) ?                     \
+	  (bp)->tx_old + (TX_RING_SIZE - 1) - (bp)->tx_new :  \
+			    (bp)->tx_old - (bp)->tx_new - 1)
+
+
+#define SUN4C_TX_BUFFS_AVAIL(bp)                                    \
+        (((bp)->tx_old <= (bp)->tx_new) ?                           \
+	  (bp)->tx_old + (SUN4C_TX_RING_SIZE - 1) - (bp)->tx_new :  \
+	  (bp)->tx_old - (bp)->tx_new - (TX_RING_SIZE - SUN4C_TX_RING_SIZE))
+
+
+#define RX_COPY_THRESHOLD  128
+#define RX_BUF_ALLOC_SIZE  (ETH_FRAME_LEN + (64 * 3))
+
+struct bmac_init_block {
+	struct be_rxd be_rxd[RX_RING_MAXSIZE];
+	struct be_txd be_txd[TX_RING_MAXSIZE];
+};
+
+#define bib_offset(mem, elem) \
+((__u32)((unsigned long)(&(((struct bmac_init_block *)0)->mem[elem]))))
+
+#define SUN4C_PKT_BUF_SZ	1546
+#define SUN4C_RX_BUFF_SIZE	SUN4C_PKT_BUF_SZ
+#define SUN4C_TX_BUFF_SIZE	SUN4C_PKT_BUF_SZ
+
+#define SUN4C_RX_RING_SIZE	16
+#define SUN4C_TX_RING_SIZE	16
+
+struct bigmac_buffers {
+	char	tx_buf[SUN4C_TX_RING_SIZE][SUN4C_TX_BUFF_SIZE];
+	char	pad[2];		/* Align rx_buf for copy_and_sum(). */
+	char	rx_buf[SUN4C_RX_RING_SIZE][SUN4C_RX_BUFF_SIZE];
+};
+
+#define bbuf_offset(mem, elem) \
+((__u32)((unsigned long)(&(((struct bigmac_buffers *)0)->mem[elem][0]))))
+
+/* Now software state stuff. */
+enum bigmac_transceiver {
+	external = 0,
+	internal = 1,
+	none     = 2,
+};
+
+/* Timer state engine. */
+enum bigmac_timer_state {
+	ltrywait = 1,  /* Forcing try of all modes, from fastest to slowest. */
+	asleep   = 2,  /* Timer inactive.                                    */
+};
+
+struct bigmac {
+	struct qe_globreg	*gregs;		/* QEC Global Registers               */
+	struct qe_creg		*creg;		/* QEC BigMAC Channel Registers       */
+	struct BIG_MAC_regs	*bregs;         /* BigMAC Registers                   */
+	struct bmac_tcvr	*tregs;         /* BigMAC Transceiver                 */
+	struct bmac_init_block	*bmac_block;	/* RX and TX descriptors              */
+	__u32			 bblock_dvma;	/* RX and TX descriptors              */
+
+	struct sk_buff		*rx_skbs[RX_RING_SIZE];
+	struct sk_buff		*tx_skbs[TX_RING_SIZE];
+
+	int rx_new, tx_new, rx_old, tx_old;
+
+	struct bigmac_buffers	*sun4c_buffers;
+	__u32			 s4c_buf_dvma;
+
+	int board_rev;				/* BigMAC board revision.             */
+
+	enum bigmac_transceiver	tcvr_type;
+	unsigned int		bigmac_bursts;
+	unsigned int		paddr;
+	unsigned short		sw_bmsr;         /* SW copy of PHY BMSR               */
+	unsigned short		sw_bmcr;         /* SW copy of PHY BMCR               */
+	struct timer_list	bigmac_timer;
+	enum bigmac_timer_state	timer_state;
+	unsigned int		timer_ticks;
+
+	struct enet_statistics		enet_stats;
+	struct linux_sbus_device	*qec_sbus_dev;
+	struct linux_sbus_device	*bigmac_sbus_dev;
+	struct device			*dev;
+	struct bigmac			*next_module;
+};
+
+/* We use this to acquire receive skb's that we can DMA directly into. */
+#define ALIGNED_RX_SKB_ADDR(addr) \
+        ((((unsigned long)(addr) + (64 - 1)) & ~(64 - 1)) - (unsigned long)(addr))
+
+static inline struct sk_buff *big_mac_alloc_skb(unsigned int length, int gfp_flags)
+{
+	struct sk_buff *skb;
+
+	skb = alloc_skb(length + 64, gfp_flags);
+	if(skb) {
+		int offset = ALIGNED_RX_SKB_ADDR(skb->data);
+
+		if(offset)
+			skb_reserve(skb, offset);
+	}
+	return skb;
+}
+
+#endif /* !(_SUNBMAC_H) */