Initial import

1 files changed, 125 insertions, 0 deletions

diff --git a/drivers/scsi/t128.h b/drivers/scsi/t128.h
new file mode 100644
index 000000000..2c7371454
--- /dev/null
+++ b/drivers/scsi/t128.h
@@ -0,0 +1,125 @@
+/*
+ * Trantor T128/T128F/T228 defines
+ *	Note : architecturally, the T100 and T128 are different and won't work
+ *
+ * Copyright 1993, Drew Eckhardt
+ *	Visionary Computing
+ *	(Unix and Linux consulting and custom programming)
+ *	drew@colorado.edu
+ *      +1 (303) 440-4894
+ *
+ * For more information, please consult
+ *
+ * Trantor Systems, Ltd.
+ * T128/T128F/T228 SCSI Host Adapter
+ * Hardware Specifications
+ *
+ * Trantor Systems, Ltd.
+ * 5415 Randall Place
+ * Fremont, CA 94538
+ * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
+ */
+
+#ifndef T128_H
+#define T128_H
+
+#define TDEBUG		0
+#define TDEBUG_INIT	0x1
+#define TDEBUG_TRANSFER 0x2
+
+/*
+ * The trantor boards are memory mapped. They use an NCR5380 or
+ * equivalent (my sample board had part second sourced from ZILOG).
+ * NCR's recommended "Pseudo-DMA" architecture is used, where
+ * a PAL drives the DMA signals on the 5380 allowing fast, blind
+ * transfers with proper handshaking.
+ */
+
+/*
+ * Note : a boot switch is provided for the purpose of informing the
+ * firmware to boot or not boot from attached SCSI devices.  So, I imagine
+ * there are fewer people who've yanked the ROM like they do on the Seagate
+ * to make bootup faster, and I'll probably use this for autodetection.
+ */
+#define T_ROM_OFFSET		0
+
+/*
+ * Note : my sample board *WAS NOT* populated with the SRAM, so this
+ * can't be used for autodetection without a ROM present.
+ */
+#define T_RAM_OFFSET		0x1800
+
+/*
+ * All of the registers are allocated 32 bytes of address space, except
+ * for the data register (read/write to/from the 5380 in pseudo-DMA mode)
+ */ 
+#define T_CONTROL_REG_OFFSET	0x1c00	/* rw */
+#define T_CR_INT		0x10	/* Enable interrupts */
+#define T_CR_CT			0x02	/* Reset watchdog timer */
+
+#define T_STATUS_REG_OFFSET	0x1c20	/* ro */
+#define T_ST_BOOT		0x80	/* Boot switch */
+#define T_ST_S3			0x40	/* User settable switches, */
+#define T_ST_S2			0x20	/* read 0 when switch is on, 1 off */
+#define T_ST_S1			0x10
+#define T_ST_PS2		0x08	/* Set for Microchannel 228 */
+#define T_ST_RDY		0x04	/* 5380 DRQ */
+#define T_ST_TIM		0x02	/* indicates 40us watchdog timer fired */
+#define T_ST_ZERO		0x01	/* Always zero */
+
+#define T_5380_OFFSET		0x1d00	/* 8 registers here, see NCR5380.h */
+
+#define T_DATA_REG_OFFSET	0x1e00	/* rw 512 bytes long */
+
+#ifndef ASM
+
+#ifndef CMD_PER_LUN
+#define CMD_PER_LUN 2
+#endif
+
+#ifndef CAN_QUEUE
+#define CAN_QUEUE 32
+#endif
+
+#define NCR5380_implementation_fields \
+    void __iomem *base
+
+#define NCR5380_local_declare() \
+    void __iomem *base
+
+#define NCR5380_setup(instance) \
+    base = ((struct NCR5380_hostdata *)(instance->hostdata))->base
+
+#define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))
+
+#if !(TDEBUG & TDEBUG_TRANSFER)
+#define NCR5380_read(reg) readb(T128_address(reg))
+#define NCR5380_write(reg, value) writeb((value),(T128_address(reg)))
+#else
+#define NCR5380_read(reg)						\
+    (((unsigned char) printk("scsi%d : read register %d at address %08x\n"\
+    , instance->hostno, (reg), T128_address(reg))), readb(T128_address(reg)))
+
+#define NCR5380_write(reg, value) {					\
+    printk("scsi%d : write %02x to register %d at address %08x\n",	\
+	    instance->hostno, (value), (reg), T128_address(reg));	\
+    writeb((value), (T128_address(reg)));				\
+}
+#endif
+
+#define NCR5380_intr t128_intr
+#define do_NCR5380_intr do_t128_intr
+#define NCR5380_queue_command t128_queue_command
+#define NCR5380_abort t128_abort
+#define NCR5380_bus_reset t128_bus_reset
+#define NCR5380_info t128_info
+#define NCR5380_show_info t128_show_info
+#define NCR5380_write_info t128_write_info
+
+/* 15 14 12 10 7 5 3
+   1101 0100 1010 1000 */
+
+#define T128_IRQS 0xc4a8
+
+#endif /* ndef ASM */
+#endif /* T128_H */