Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 483 insertions, 0 deletions

diff --git a/drivers/net/sonic.h b/drivers/net/sonic.h
new file mode 100644
index 000000000000..c4a6d58e4afb
--- /dev/null
+++ b/drivers/net/sonic.h
@@ -0,0 +1,483 @@
+/*
+ * Helpfile for sonic.c
+ *
+ * (C) Waldorf Electronics, Germany
+ * Written by Andreas Busse
+ *
+ * NOTE: most of the structure definitions here are endian dependent.
+ * If you want to use this driver on big endian machines, the data
+ * and pad structure members must be exchanged. Also, the structures
+ * need to be changed accordingly to the bus size. 
+ *
+ * 981229 MSch:	did just that for the 68k Mac port (32 bit, big endian),
+ *		see CONFIG_MACSONIC branch below.
+ *
+ */
+#ifndef SONIC_H
+#define SONIC_H
+
+#include <linux/config.h>
+
+/*
+ * SONIC register offsets
+ */
+
+#define SONIC_CMD              0x00
+#define SONIC_DCR              0x01
+#define SONIC_RCR              0x02
+#define SONIC_TCR              0x03
+#define SONIC_IMR              0x04
+#define SONIC_ISR              0x05
+
+#define SONIC_UTDA             0x06
+#define SONIC_CTDA             0x07
+
+#define SONIC_URDA             0x0d
+#define SONIC_CRDA             0x0e
+#define SONIC_EOBC             0x13
+#define SONIC_URRA             0x14
+#define SONIC_RSA              0x15
+#define SONIC_REA              0x16
+#define SONIC_RRP              0x17
+#define SONIC_RWP              0x18
+#define SONIC_RSC              0x2b
+
+#define SONIC_CEP              0x21
+#define SONIC_CAP2             0x22
+#define SONIC_CAP1             0x23
+#define SONIC_CAP0             0x24
+#define SONIC_CE               0x25
+#define SONIC_CDP              0x26
+#define SONIC_CDC              0x27
+
+#define SONIC_WT0              0x29
+#define SONIC_WT1              0x2a
+
+#define SONIC_SR               0x28
+
+
+/* test-only registers */
+
+#define SONIC_TPS		0x08
+#define SONIC_TFC		0x09
+#define SONIC_TSA0		0x0a
+#define SONIC_TSA1		0x0b
+#define SONIC_TFS		0x0c
+
+#define SONIC_CRBA0		0x0f
+#define SONIC_CRBA1		0x10
+#define SONIC_RBWC0		0x11
+#define SONIC_RBWC1		0x12
+#define SONIC_TTDA		0x20
+#define SONIC_MDT		0x2f
+
+#define SONIC_TRBA0		0x19
+#define SONIC_TRBA1		0x1a
+#define SONIC_TBWC0		0x1b
+#define SONIC_TBWC1		0x1c
+#define SONIC_LLFA		0x1f
+
+#define SONIC_ADDR0		0x1d
+#define SONIC_ADDR1		0x1e
+
+/*
+ * Error counters
+ */
+#define SONIC_CRCT              0x2c
+#define SONIC_FAET              0x2d
+#define SONIC_MPT               0x2e
+
+#define SONIC_DCR2              0x3f
+
+/*
+ * SONIC command bits
+ */
+
+#define SONIC_CR_LCAM           0x0200
+#define SONIC_CR_RRRA           0x0100
+#define SONIC_CR_RST            0x0080
+#define SONIC_CR_ST             0x0020
+#define SONIC_CR_STP            0x0010
+#define SONIC_CR_RXEN           0x0008
+#define SONIC_CR_RXDIS          0x0004
+#define SONIC_CR_TXP            0x0002
+#define SONIC_CR_HTX            0x0001
+
+/*
+ * SONIC data configuration bits
+ */
+
+#define SONIC_DCR_EXBUS         0x8000
+#define SONIC_DCR_LBR           0x2000
+#define SONIC_DCR_PO1           0x1000
+#define SONIC_DCR_PO0           0x0800
+#define SONIC_DCR_SBUS          0x0400
+#define SONIC_DCR_USR1          0x0200
+#define SONIC_DCR_USR0          0x0100
+#define SONIC_DCR_WC1           0x0080
+#define SONIC_DCR_WC0           0x0040
+#define SONIC_DCR_DW            0x0020
+#define SONIC_DCR_BMS           0x0010
+#define SONIC_DCR_RFT1          0x0008
+#define SONIC_DCR_RFT0          0x0004
+#define SONIC_DCR_TFT1          0x0002
+#define SONIC_DCR_TFT0          0x0001
+
+/*
+ * Constants for the SONIC receive control register.
+ */
+
+#define SONIC_RCR_ERR           0x8000
+#define SONIC_RCR_RNT           0x4000
+#define SONIC_RCR_BRD           0x2000
+#define SONIC_RCR_PRO           0x1000
+#define SONIC_RCR_AMC           0x0800
+#define SONIC_RCR_LB1           0x0400
+#define SONIC_RCR_LB0           0x0200
+
+#define SONIC_RCR_MC            0x0100
+#define SONIC_RCR_BC            0x0080
+#define SONIC_RCR_LPKT          0x0040
+#define SONIC_RCR_CRS           0x0020
+#define SONIC_RCR_COL           0x0010
+#define SONIC_RCR_CRCR          0x0008
+#define SONIC_RCR_FAER          0x0004
+#define SONIC_RCR_LBK           0x0002
+#define SONIC_RCR_PRX           0x0001
+
+#define SONIC_RCR_LB_OFF        0
+#define SONIC_RCR_LB_MAC        SONIC_RCR_LB0
+#define SONIC_RCR_LB_ENDEC      SONIC_RCR_LB1
+#define SONIC_RCR_LB_TRANS      (SONIC_RCR_LB0 | SONIC_RCR_LB1)
+
+/* default RCR setup */
+
+#define SONIC_RCR_DEFAULT       (SONIC_RCR_BRD)
+
+
+/*
+ * SONIC Transmit Control register bits
+ */
+
+#define SONIC_TCR_PINTR         0x8000
+#define SONIC_TCR_POWC          0x4000
+#define SONIC_TCR_CRCI          0x2000
+#define SONIC_TCR_EXDIS         0x1000
+#define SONIC_TCR_EXD           0x0400
+#define SONIC_TCR_DEF           0x0200
+#define SONIC_TCR_NCRS          0x0100
+#define SONIC_TCR_CRLS          0x0080
+#define SONIC_TCR_EXC           0x0040
+#define SONIC_TCR_PMB           0x0008
+#define SONIC_TCR_FU            0x0004
+#define SONIC_TCR_BCM           0x0002
+#define SONIC_TCR_PTX           0x0001
+
+#define SONIC_TCR_DEFAULT       0x0000
+
+/* 
+ * Constants for the SONIC_INTERRUPT_MASK and
+ * SONIC_INTERRUPT_STATUS registers.
+ */
+
+#define SONIC_INT_BR		0x4000
+#define SONIC_INT_HBL		0x2000
+#define SONIC_INT_LCD           0x1000
+#define SONIC_INT_PINT          0x0800
+#define SONIC_INT_PKTRX         0x0400
+#define SONIC_INT_TXDN          0x0200
+#define SONIC_INT_TXER          0x0100
+#define SONIC_INT_TC            0x0080
+#define SONIC_INT_RDE           0x0040
+#define SONIC_INT_RBE           0x0020
+#define SONIC_INT_RBAE		0x0010
+#define SONIC_INT_CRC		0x0008
+#define SONIC_INT_FAE		0x0004
+#define SONIC_INT_MP		0x0002
+#define SONIC_INT_RFO		0x0001
+
+
+/*
+ * The interrupts we allow.
+ */
+
+#define SONIC_IMR_DEFAULT	(SONIC_INT_BR | \
+				SONIC_INT_LCD | \
+                                SONIC_INT_PINT | \
+                                SONIC_INT_PKTRX | \
+                                SONIC_INT_TXDN | \
+                                SONIC_INT_TXER | \
+                                SONIC_INT_RDE | \
+                                SONIC_INT_RBE | \
+                                SONIC_INT_RBAE | \
+                                SONIC_INT_CRC | \
+                                SONIC_INT_FAE | \
+                                SONIC_INT_MP)
+
+
+#define	SONIC_END_OF_LINKS	0x0001
+
+
+#ifdef CONFIG_MACSONIC
+/*
+ * Big endian like structures on 680x0 Macs
+ */
+
+typedef struct {
+	u32 rx_bufadr_l;	/* receive buffer ptr */
+	u32 rx_bufadr_h;
+
+	u32 rx_bufsize_l;	/* no. of words in the receive buffer */
+	u32 rx_bufsize_h;
+} sonic_rr_t;
+
+/*
+ * Sonic receive descriptor. Receive descriptors are
+ * kept in a linked list of these structures.
+ */
+
+typedef struct {
+	SREGS_PAD(pad0);
+	u16 rx_status;		/* status after reception of a packet */
+	 SREGS_PAD(pad1);
+	u16 rx_pktlen;		/* length of the packet incl. CRC */
+
+	/*
+	 * Pointers to the location in the receive buffer area (RBA)
+	 * where the packet resides. A packet is always received into
+	 * a contiguous piece of memory.
+	 */
+	 SREGS_PAD(pad2);
+	u16 rx_pktptr_l;
+	 SREGS_PAD(pad3);
+	u16 rx_pktptr_h;
+
+	 SREGS_PAD(pad4);
+	u16 rx_seqno;		/* sequence no. */
+
+	 SREGS_PAD(pad5);
+	u16 link;		/* link to next RDD (end if EOL bit set) */
+
+	/*
+	 * Owner of this descriptor, 0= driver, 1=sonic
+	 */
+
+	 SREGS_PAD(pad6);
+	u16 in_use;
+
+	caddr_t rda_next;	/* pointer to next RD */
+} sonic_rd_t;
+
+
+/*
+ * Describes a Transmit Descriptor
+ */
+typedef struct {
+	SREGS_PAD(pad0);
+	u16 tx_status;		/* status after transmission of a packet */
+	 SREGS_PAD(pad1);
+	u16 tx_config;		/* transmit configuration for this packet */
+	 SREGS_PAD(pad2);
+	u16 tx_pktsize;		/* size of the packet to be transmitted */
+	 SREGS_PAD(pad3);
+	u16 tx_frag_count;	/* no. of fragments */
+
+	 SREGS_PAD(pad4);
+	u16 tx_frag_ptr_l;
+	 SREGS_PAD(pad5);
+	u16 tx_frag_ptr_h;
+	 SREGS_PAD(pad6);
+	u16 tx_frag_size;
+
+	 SREGS_PAD(pad7);
+	u16 link;		/* ptr to next descriptor */
+} sonic_td_t;
+
+
+/*
+ * Describes an entry in the CAM Descriptor Area.
+ */
+
+typedef struct {
+	SREGS_PAD(pad0);
+	u16 cam_entry_pointer;
+	 SREGS_PAD(pad1);
+	u16 cam_cap0;
+	 SREGS_PAD(pad2);
+	u16 cam_cap1;
+	 SREGS_PAD(pad3);
+	u16 cam_cap2;
+} sonic_cd_t;
+
+#define CAM_DESCRIPTORS 16
+
+
+typedef struct {
+	sonic_cd_t cam_desc[CAM_DESCRIPTORS];
+	 SREGS_PAD(pad);
+	u16 cam_enable;
+} sonic_cda_t;
+
+#else				/* original declarations, little endian 32 bit */
+
+/*
+ * structure definitions
+ */
+
+typedef struct {
+	u32 rx_bufadr_l;	/* receive buffer ptr */
+	u32 rx_bufadr_h;
+
+	u32 rx_bufsize_l;	/* no. of words in the receive buffer */
+	u32 rx_bufsize_h;
+} sonic_rr_t;
+
+/*
+ * Sonic receive descriptor. Receive descriptors are
+ * kept in a linked list of these structures.
+ */
+
+typedef struct {
+	u16 rx_status;		/* status after reception of a packet */
+	 SREGS_PAD(pad0);
+	u16 rx_pktlen;		/* length of the packet incl. CRC */
+	 SREGS_PAD(pad1);
+
+	/*
+	 * Pointers to the location in the receive buffer area (RBA)
+	 * where the packet resides. A packet is always received into
+	 * a contiguous piece of memory.
+	 */
+	u16 rx_pktptr_l;
+	 SREGS_PAD(pad2);
+	u16 rx_pktptr_h;
+	 SREGS_PAD(pad3);
+
+	u16 rx_seqno;		/* sequence no. */
+	 SREGS_PAD(pad4);
+
+	u16 link;		/* link to next RDD (end if EOL bit set) */
+	 SREGS_PAD(pad5);
+
+	/*
+	 * Owner of this descriptor, 0= driver, 1=sonic
+	 */
+
+	u16 in_use;
+	 SREGS_PAD(pad6);
+
+	caddr_t rda_next;	/* pointer to next RD */
+} sonic_rd_t;
+
+
+/*
+ * Describes a Transmit Descriptor
+ */
+typedef struct {
+	u16 tx_status;		/* status after transmission of a packet */
+	 SREGS_PAD(pad0);
+	u16 tx_config;		/* transmit configuration for this packet */
+	 SREGS_PAD(pad1);
+	u16 tx_pktsize;		/* size of the packet to be transmitted */
+	 SREGS_PAD(pad2);
+	u16 tx_frag_count;	/* no. of fragments */
+	 SREGS_PAD(pad3);
+
+	u16 tx_frag_ptr_l;
+	 SREGS_PAD(pad4);
+	u16 tx_frag_ptr_h;
+	 SREGS_PAD(pad5);
+	u16 tx_frag_size;
+	 SREGS_PAD(pad6);
+
+	u16 link;		/* ptr to next descriptor */
+	 SREGS_PAD(pad7);
+} sonic_td_t;
+
+
+/*
+ * Describes an entry in the CAM Descriptor Area.
+ */
+
+typedef struct {
+	u16 cam_entry_pointer;
+	 SREGS_PAD(pad0);
+	u16 cam_cap0;
+	 SREGS_PAD(pad1);
+	u16 cam_cap1;
+	 SREGS_PAD(pad2);
+	u16 cam_cap2;
+	 SREGS_PAD(pad3);
+} sonic_cd_t;
+
+#define CAM_DESCRIPTORS 16
+
+
+typedef struct {
+	sonic_cd_t cam_desc[CAM_DESCRIPTORS];
+	u16 cam_enable;
+	 SREGS_PAD(pad);
+} sonic_cda_t;
+#endif				/* endianness */
+
+/*
+ * Some tunables for the buffer areas. Power of 2 is required
+ * the current driver uses one receive buffer for each descriptor.
+ *
+ * MSch: use more buffer space for the slow m68k Macs!
+ */
+#ifdef CONFIG_MACSONIC
+#define SONIC_NUM_RRS    32	/* number of receive resources */
+#define SONIC_NUM_RDS    SONIC_NUM_RRS	/* number of receive descriptors */
+#define SONIC_NUM_TDS    32	/* number of transmit descriptors */
+#else
+#define SONIC_NUM_RRS    16	/* number of receive resources */
+#define SONIC_NUM_RDS    SONIC_NUM_RRS	/* number of receive descriptors */
+#define SONIC_NUM_TDS    16	/* number of transmit descriptors */
+#endif
+#define SONIC_RBSIZE   1520	/* size of one resource buffer */
+
+#define SONIC_RDS_MASK   (SONIC_NUM_RDS-1)
+#define SONIC_TDS_MASK   (SONIC_NUM_TDS-1)
+
+
+/* Information that need to be kept for each board. */
+struct sonic_local {
+	sonic_cda_t cda;	/* virtual CPU address of CDA */
+	sonic_td_t tda[SONIC_NUM_TDS];	/* transmit descriptor area */
+	sonic_rr_t rra[SONIC_NUM_RRS];	/* receive resource area */
+	sonic_rd_t rda[SONIC_NUM_RDS];	/* receive descriptor area */
+	struct sk_buff *tx_skb[SONIC_NUM_TDS];	/* skbuffs for packets to transmit */
+	unsigned int tx_laddr[SONIC_NUM_TDS];	/* logical DMA address fro skbuffs */
+	unsigned char *rba;	/* start of receive buffer areas */
+	unsigned int cda_laddr;	/* logical DMA address of CDA */
+	unsigned int tda_laddr;	/* logical DMA address of TDA */
+	unsigned int rra_laddr;	/* logical DMA address of RRA */
+	unsigned int rda_laddr;	/* logical DMA address of RDA */
+	unsigned int rba_laddr;	/* logical DMA address of RBA */
+	unsigned int cur_rra;	/* current indexes to resource areas */
+	unsigned int cur_rx;
+	unsigned int cur_tx;
+	unsigned int dirty_tx;	/* last unacked transmit packet */
+	char tx_full;
+	struct net_device_stats stats;
+};
+
+#define TX_TIMEOUT 6
+
+/* Index to functions, as function prototypes. */
+
+static int sonic_open(struct net_device *dev);
+static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t sonic_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static void sonic_rx(struct net_device *dev);
+static int sonic_close(struct net_device *dev);
+static struct net_device_stats *sonic_get_stats(struct net_device *dev);
+static void sonic_multicast_list(struct net_device *dev);
+static int sonic_init(struct net_device *dev);
+static void sonic_tx_timeout(struct net_device *dev);
+
+static const char *version =
+    "sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n";
+
+#endif /* SONIC_H */