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riscv: add etherif.h

It's been hard to make this portable so let's not fight that fight just now.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Ronald G. Minnich 4 years ago
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12142a4e4d
1 changed files with 44 additions and 0 deletions
  1. 44 0
      sys/src/9/riscv/etherif.h

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sys/src/9/riscv/etherif.h

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+/*
+ * This file is part of the UCB release of Plan 9. It is subject to the license
+ * terms in the LICENSE file found in the top-level directory of this
+ * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
+ * part of the UCB release of Plan 9, including this file, may be copied,
+ * modified, propagated, or distributed except according to the terms contained
+ * in the LICENSE file.
+ */
+
+enum {
+	MaxEther	= 48,
+	Ntypes		= 8,
+};
+
+typedef struct Ether Ether;
+struct Ether {
+	ISAConf ISAConf;			/* hardware info */
+
+	int	ctlrno;
+	int	tbdf;			/* type+busno+devno+funcno */
+	uint8_t	ea[Eaddrlen];
+
+	void	(*attach)(Ether*);	/* filled in by reset routine */
+	void	(*detach)(Ether*);
+	void	(*transmit)(Ether*);
+	void	(*interrupt)(Ureg*, void*);
+	int32_t	(*ifstat)(Ether*, void*, int32_t, uint32_t);
+	int32_t 	(*ctl)(Ether*, void*, int32_t); /* custom ctl messages */
+	void	(*power)(Ether*, int);	/* power on/off */
+	void	(*shutdown)(Ether*);	/* shutdown hardware before reboot */
+	void	*ctlr;
+
+	Queue*	oq;
+
+	Netif Netif;
+};
+
+extern Block* etheriq(Ether*, Block*, int);
+extern void addethercard(char*, int(*)(Ether*));
+extern uint32_t ethercrc(unsigned char*, int);
+extern int parseether(unsigned char*, char*);
+
+#define NEXT(x, l)	(((x)+1)%(l))
+#define PREV(x, l)	(((x) == 0) ? (l)-1: (x)-1)