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Diffstat (limited to 'sys')
-rw-r--r--sys/dev/ic/rl2reg.h44
1 files changed, 14 insertions, 30 deletions
diff --git a/sys/dev/ic/rl2reg.h b/sys/dev/ic/rl2reg.h
index a03f68aa9c2..e311609e69e 100644
--- a/sys/dev/ic/rl2reg.h
+++ b/sys/dev/ic/rl2reg.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: rl2reg.h,v 1.1 1999/06/21 23:21:47 d Exp $ */
+/* $OpenBSD: rl2reg.h,v 1.2 1999/07/14 03:52:55 d Exp $ */
/*
* David Leonard <d@openbsd.org>, 1999. Public Domain.
*
@@ -37,8 +37,7 @@
* +-------+-------+-------+-------+-------+-------+-------+-------+
*/
-/* Register offsets */
-
+/* Register offsets. */
#define RL2_REG_DATA 0
#define RL2_REG_STATUS 2
#define RL2_REG_CONTROL 4
@@ -47,7 +46,7 @@
#define RL2_NPORTS 8
/*
- * A short delay is needed (16ms?) after register writes.
+ * A short delay is needed (16ms?) after register writes on some cards.
* XXX This is done by performing an innocent and harmless bus read. (i386)
* This is what Proxim's driver does, anyway.
*/
@@ -59,9 +58,7 @@ static void _rl2_register_write_1 __P((struct rl2_softc *, u_int8_t,
static u_int8_t _rl2_register_read_1 __P((struct rl2_softc *, u_int8_t));
static int rl2_status_rx_ready __P((struct rl2_softc *));
-/* Register access */
-
-/* Write to a register */
+/* Write to a register. */
static inline void
_rl2_register_write_1(sc, regoff, value)
struct rl2_softc *sc;
@@ -76,7 +73,7 @@ _rl2_register_write_1(sc, regoff, value)
_rl2_regacc_delay();
}
-/* Read from a register */
+/* Read from a register. */
static inline u_int8_t
_rl2_register_read_1(sc, regoff)
struct rl2_softc *sc;
@@ -95,9 +92,7 @@ _rl2_register_read_1(sc, regoff)
return (ret);
}
-/* Data register */
-
-/* 8-bit data access */
+/* 8-bit data register access. */
#define rl2_data_write_1(sc, value) \
_rl2_register_write_1(sc, RL2_REG_DATA, (value))
#define rl2_data_read_1(sc) \
@@ -109,7 +104,7 @@ _rl2_register_read_1(sc, regoff)
bus_space_read_multi_1((sc)->sc_iot, (sc)->sc_ioh, \
RL2_REG_DATA, (buf), (len))
-/* 16-bit data access */
+/* 16-bit data register access. */
#define rl2_data_write_2(sc, value) \
bus_space_write_2((sc)->sc_iot, (sc)->sc_ioh, \
RL2_REG_DATA, (value))
@@ -123,12 +118,10 @@ _rl2_register_read_1(sc, regoff)
bus_space_read_multi_2((sc)->sc_iot, (sc)->sc_ioh, \
RL2_REG_DATA, (buf), (len))
-/* Status register */
-
+/* Status register. */
#define RL2_STATUS_CLRNAK 0x08
#define RL2_STATUS_WAKEUP 0x80
-/* Status codes */
#define RL2_STATUS_TX_IDLE 0x00
#define RL2_STATUS_TX_HILEN_AVAIL 0x01
#define RL2_STATUS_TX_HILEN_ACCEPT 0x02
@@ -182,7 +175,9 @@ rl2_status_rx_ready(sc)
u_int8_t status;
status = rl2_status_rx_read(sc);
- return (status == 0x60 || status == 0x10 || status == 0x50);
+ return (status == RL2_STATUS_RX_LOLEN_AVAIL ||
+ status == RL2_STATUS_RX_HILEN_AVAIL ||
+ status == RL2_STATUS_RX_ERROR);
}
#define rl2_status_tx_int(sc) do { \
@@ -200,8 +195,7 @@ rl2_status_rx_ready(sc)
splx(_s); \
} while (0)
-/* Control register */
-
+/* Control register. */
#define RL2_CONTROL_RXINT 0x01
#define RL2_CONTROL_TXINT 0x02
#define RL2_CONTROL_BIT2 0x04
@@ -225,8 +219,7 @@ rl2_status_rx_ready(sc)
rl2_control_write(sc, (sc)->sc_control); \
} while (0)
-/* IntSel register */
-
+/* Interrupt selection register. */
#define RL2_INTSEL_IRQMASK 0x07
#define RL2_INTSEL_ENABLE 0x10
#define RL2_INTSEL_BIT7 0x80
@@ -247,20 +240,11 @@ rl2_status_rx_ready(sc)
(sc)->sc_intsel |= RL2_INTSEL_ENABLE); \
splx(_s); \
} while (0)
-
#define rl2_intsel_write(sc, value) \
_rl2_register_write_1(sc, RL2_REG_INTSEL, \
(sc)->sc_intsel |= (value))
-/* End of interrupt signal (used on some newer cards?) */
-
+/* End of interrupt signal, used on some newer cards. */
#define rl2_eoi(sc) \
(void) _rl2_register_read_1(sc, RL2_REG_EOI)
-/* Strings useful for debugging with printf("%b") */
-
-#ifdef RL2DEBUG
-#define RL2_BSTR_STATUS "\20\4BIT3\10BIT7"
-#define RL2_BSTR_CONTROL "\20\1RXINT\2TXINT\3BIT2\4BIT3\5RESET\6BUS16"
-#define RL2_BSTR_INTSEL "\20\5ENABLE"
-#endif