Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 473 insertions, 0 deletions

diff --git a/drivers/net/ethernet/natsemi/sonic.h b/drivers/net/ethernet/natsemi/sonic.h
new file mode 100644
index 000000000..a5b803eb8
--- /dev/null
+++ b/drivers/net/ethernet/natsemi/sonic.h
@@ -0,0 +1,473 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Header file 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)
+ *
+ * 990611 David Huggins-Daines <dhd@debian.org>: This machine abstraction
+ * does not cope with 16-bit bus sizes very well.  Therefore I have
+ * rewritten it with ugly macros and evil inlines.
+ *
+ * 050625 Finn Thain: introduced more 32-bit cards and dhd's support
+ *        for 16-bit cards (from the mac68k project).
+ */
+
+#ifndef SONIC_H
+#define SONIC_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
+
+#define SONIC_CR_ALL (SONIC_CR_LCAM | SONIC_CR_RRRA | \
+		      SONIC_CR_RXEN | SONIC_CR_TXP)
+
+/*
+ * 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_OWC           0x0020
+#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_RFO | \
+                                SONIC_INT_PKTRX | \
+                                SONIC_INT_TXDN | \
+                                SONIC_INT_TXER | \
+                                SONIC_INT_RDE | \
+                                SONIC_INT_RBAE | \
+                                SONIC_INT_CRC | \
+                                SONIC_INT_FAE | \
+                                SONIC_INT_MP)
+
+
+#define SONIC_EOL       0x0001
+#define CAM_DESCRIPTORS 16
+
+/* Offsets in the various DMA buffers accessed by the SONIC */
+
+#define SONIC_BITMODE16 0
+#define SONIC_BITMODE32 1
+#define SONIC_BUS_SCALE(bitmode) ((bitmode) ? 4 : 2)
+/* Note!  These are all measured in bus-size units, so use SONIC_BUS_SCALE */
+#define SIZEOF_SONIC_RR 4
+#define SONIC_RR_BUFADR_L  0
+#define SONIC_RR_BUFADR_H  1
+#define SONIC_RR_BUFSIZE_L 2
+#define SONIC_RR_BUFSIZE_H 3
+
+#define SIZEOF_SONIC_RD 7
+#define SONIC_RD_STATUS   0
+#define SONIC_RD_PKTLEN   1
+#define SONIC_RD_PKTPTR_L 2
+#define SONIC_RD_PKTPTR_H 3
+#define SONIC_RD_SEQNO    4
+#define SONIC_RD_LINK     5
+#define SONIC_RD_IN_USE   6
+
+#define SIZEOF_SONIC_TD 8
+#define SONIC_TD_STATUS       0
+#define SONIC_TD_CONFIG       1
+#define SONIC_TD_PKTSIZE      2
+#define SONIC_TD_FRAG_COUNT   3
+#define SONIC_TD_FRAG_PTR_L   4
+#define SONIC_TD_FRAG_PTR_H   5
+#define SONIC_TD_FRAG_SIZE    6
+#define SONIC_TD_LINK         7
+
+#define SIZEOF_SONIC_CD 4
+#define SONIC_CD_ENTRY_POINTER 0
+#define SONIC_CD_CAP0          1
+#define SONIC_CD_CAP1          2
+#define SONIC_CD_CAP2          3
+
+#define SIZEOF_SONIC_CDA ((CAM_DESCRIPTORS * SIZEOF_SONIC_CD) + 1)
+#define SONIC_CDA_CAM_ENABLE   (CAM_DESCRIPTORS * SIZEOF_SONIC_CD)
+
+/*
+ * 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!
+ */
+#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 */
+
+#define SONIC_RRS_MASK  (SONIC_NUM_RRS - 1)
+#define SONIC_RDS_MASK  (SONIC_NUM_RDS - 1)
+#define SONIC_TDS_MASK  (SONIC_NUM_TDS - 1)
+
+#define SONIC_RBSIZE	1520          /* size of one resource buffer */
+
+/* Again, measured in bus size units! */
+#define SIZEOF_SONIC_DESC (SIZEOF_SONIC_CDA	\
+	+ (SIZEOF_SONIC_TD * SONIC_NUM_TDS)	\
+	+ (SIZEOF_SONIC_RD * SONIC_NUM_RDS)	\
+	+ (SIZEOF_SONIC_RR * SONIC_NUM_RRS))
+
+/* Information that need to be kept for each board. */
+struct sonic_local {
+	/* Bus size.  0 == 16 bits, 1 == 32 bits. */
+	int dma_bitmode;
+	/* Register offset within the longword (independent of endianness,
+	   and varies from one type of Macintosh SONIC to another
+	   (Aarrgh)) */
+	int reg_offset;
+	void *descriptors;
+	/* Crud.  These areas have to be within the same 64K.  Therefore
+       we allocate a desriptors page, and point these to places within it. */
+	void *cda;  /* CAM descriptor area */
+	void *tda;  /* Transmit descriptor area */
+	void *rra;  /* Receive resource area */
+	void *rda;  /* Receive descriptor area */
+	struct sk_buff* volatile rx_skb[SONIC_NUM_RRS];	/* packets to be received */
+	struct sk_buff* volatile tx_skb[SONIC_NUM_TDS];	/* packets to be transmitted */
+	unsigned int tx_len[SONIC_NUM_TDS]; /* lengths of tx DMA mappings */
+	/* Logical DMA addresses on MIPS, bus addresses on m68k
+	 * (so "laddr" is a bit misleading) */
+	dma_addr_t descriptors_laddr;
+	u32 cda_laddr;              /* logical DMA address of CDA */
+	u32 tda_laddr;              /* logical DMA address of TDA */
+	u32 rra_laddr;              /* logical DMA address of RRA */
+	u32 rda_laddr;              /* logical DMA address of RDA */
+	dma_addr_t rx_laddr[SONIC_NUM_RRS]; /* logical DMA addresses of rx skbuffs */
+	dma_addr_t tx_laddr[SONIC_NUM_TDS]; /* logical DMA addresses of tx skbuffs */
+	unsigned int cur_rx;
+	unsigned int cur_tx;           /* first unacked transmit packet */
+	unsigned int eol_rx;
+	unsigned int eol_tx;           /* last unacked transmit packet */
+	int msg_enable;
+	struct device *device;         /* generic device */
+	struct net_device_stats stats;
+	spinlock_t lock;
+};
+
+#define TX_TIMEOUT (3 * HZ)
+
+/* 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);
+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, bool may_sleep);
+static void sonic_tx_timeout(struct net_device *dev, unsigned int txqueue);
+static void sonic_msg_init(struct net_device *dev);
+static int sonic_alloc_descriptors(struct net_device *dev);
+
+/* Internal inlines for reading/writing DMA buffers.  Note that bus
+   size and endianness matter here, whereas they don't for registers,
+   as far as we can tell. */
+/* OpenBSD calls this "SWO".  I'd like to think that sonic_buf_put()
+   is a much better name. */
+static inline void sonic_buf_put(u16 *base, int bitmode,
+				 int offset, __u16 val)
+{
+	if (bitmode)
+#ifdef __BIG_ENDIAN
+		__raw_writew(val, base + (offset * 2) + 1);
+#else
+		__raw_writew(val, base + (offset * 2) + 0);
+#endif
+	else
+		__raw_writew(val, base + (offset * 1) + 0);
+}
+
+static inline __u16 sonic_buf_get(u16 *base, int bitmode,
+				  int offset)
+{
+	if (bitmode)
+#ifdef __BIG_ENDIAN
+		return __raw_readw(base + (offset * 2) + 1);
+#else
+		return __raw_readw(base + (offset * 2) + 0);
+#endif
+	else
+		return __raw_readw(base + (offset * 1) + 0);
+}
+
+/* Inlines that you should actually use for reading/writing DMA buffers */
+static inline void sonic_cda_put(struct net_device* dev, int entry,
+				 int offset, __u16 val)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	sonic_buf_put(lp->cda, lp->dma_bitmode,
+		      (entry * SIZEOF_SONIC_CD) + offset, val);
+}
+
+static inline __u16 sonic_cda_get(struct net_device* dev, int entry,
+				  int offset)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	return sonic_buf_get(lp->cda, lp->dma_bitmode,
+			     (entry * SIZEOF_SONIC_CD) + offset);
+}
+
+static inline void sonic_set_cam_enable(struct net_device* dev, __u16 val)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	sonic_buf_put(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE, val);
+}
+
+static inline __u16 sonic_get_cam_enable(struct net_device* dev)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	return sonic_buf_get(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE);
+}
+
+static inline void sonic_tda_put(struct net_device* dev, int entry,
+				 int offset, __u16 val)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	sonic_buf_put(lp->tda, lp->dma_bitmode,
+		      (entry * SIZEOF_SONIC_TD) + offset, val);
+}
+
+static inline __u16 sonic_tda_get(struct net_device* dev, int entry,
+				  int offset)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	return sonic_buf_get(lp->tda, lp->dma_bitmode,
+			     (entry * SIZEOF_SONIC_TD) + offset);
+}
+
+static inline void sonic_rda_put(struct net_device* dev, int entry,
+				 int offset, __u16 val)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	sonic_buf_put(lp->rda, lp->dma_bitmode,
+		      (entry * SIZEOF_SONIC_RD) + offset, val);
+}
+
+static inline __u16 sonic_rda_get(struct net_device* dev, int entry,
+				  int offset)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	return sonic_buf_get(lp->rda, lp->dma_bitmode,
+			     (entry * SIZEOF_SONIC_RD) + offset);
+}
+
+static inline void sonic_rra_put(struct net_device* dev, int entry,
+				 int offset, __u16 val)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	sonic_buf_put(lp->rra, lp->dma_bitmode,
+		      (entry * SIZEOF_SONIC_RR) + offset, val);
+}
+
+static inline __u16 sonic_rra_get(struct net_device* dev, int entry,
+				  int offset)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+	return sonic_buf_get(lp->rra, lp->dma_bitmode,
+			     (entry * SIZEOF_SONIC_RR) + offset);
+}
+
+static inline u16 sonic_rr_addr(struct net_device *dev, int entry)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+
+	return lp->rra_laddr +
+	       entry * SIZEOF_SONIC_RR * SONIC_BUS_SCALE(lp->dma_bitmode);
+}
+
+static inline u16 sonic_rr_entry(struct net_device *dev, u16 addr)
+{
+	struct sonic_local *lp = netdev_priv(dev);
+
+	return (addr - (u16)lp->rra_laddr) / (SIZEOF_SONIC_RR *
+					      SONIC_BUS_SCALE(lp->dma_bitmode));
+}
+
+static const char version[] =
+    "sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n";
+
+#endif /* SONIC_H */