Initial import

1 files changed, 154 insertions, 0 deletions

diff --git a/drivers/scsi/pas16.h b/drivers/scsi/pas16.h
new file mode 100644
index 000000000..c6109c800
--- /dev/null
+++ b/drivers/scsi/pas16.h
@@ -0,0 +1,154 @@
+/*
+ * This driver adapted from Drew Eckhardt's Trantor T128 driver
+ *
+ * Copyright 1993, Drew Eckhardt
+ *	Visionary Computing
+ *	(Unix and Linux consulting and custom programming)
+ *	drew@colorado.edu
+ *      +1 (303) 666-5836
+ *
+ *  ( Based on T128 - DISTRIBUTION RELEASE 3. ) 
+ *
+ * Modified to work with the Pro Audio Spectrum/Studio 16
+ * by John Weidman.
+ *
+ *
+ * For more information, please consult 
+ *
+ * Media Vision
+ * (510) 770-8600
+ * (800) 348-7116
+ */
+
+
+#ifndef PAS16_H
+#define PAS16_H
+
+#define PDEBUG_INIT	0x1
+#define PDEBUG_TRANSFER 0x2
+
+#define PAS16_DEFAULT_BASE_1  0x388
+#define PAS16_DEFAULT_BASE_2  0x384
+#define PAS16_DEFAULT_BASE_3  0x38c
+#define PAS16_DEFAULT_BASE_4  0x288
+
+#define PAS16_DEFAULT_BOARD_1_IRQ 10
+#define PAS16_DEFAULT_BOARD_2_IRQ 12
+#define PAS16_DEFAULT_BOARD_3_IRQ 14
+#define PAS16_DEFAULT_BOARD_4_IRQ 15
+
+
+/*
+ * The Pro Audio Spectrum boards are I/O mapped. They use a Zilog 5380
+ * SCSI controller, which is the equivalent of NCR's 5380.  "Pseudo-DMA"
+ * architecture is used, where a PAL drives the DMA signals on the 5380
+ * allowing fast, blind transfers with proper handshaking. 
+ */
+
+
+/* The Time-out Counter register is used to safe-guard against a stuck
+ * bus (in the case of RDY driven handshake) or a stuck byte (if 16-Bit
+ * DMA conversion is used).  The counter uses a 28.224MHz clock
+ * divided by 14 as its clock source.  In the case of a stuck byte in
+ * the holding register, an interrupt is generated (and mixed with the
+ * one with the drive) using the CD-ROM interrupt pointer.
+ */
+ 
+#define P_TIMEOUT_COUNTER_REG	0x4000
+#define P_TC_DISABLE	0x80	/* Set to 0 to enable timeout int. */
+				/* Bits D6-D0 contain timeout count */
+
+
+#define P_TIMEOUT_STATUS_REG_OFFSET	0x4001
+#define P_TS_TIM		0x80	/* check timeout status */
+					/* Bits D6-D4 N/U */
+#define P_TS_ARM_DRQ_INT	0x08	/* Arm DRQ Int.  When set high,
+					 * the next rising edge will
+					 * cause a CD-ROM interrupt.
+					 * When set low, the interrupt
+					 * will be cleared.  There is
+					 * no status available for
+					 * this interrupt.
+					 */
+#define P_TS_ENABLE_TO_ERR_INTERRUPT	/* Enable timeout error int. */
+#define P_TS_ENABLE_WAIT		/* Enable Wait */
+
+#define P_TS_CT			0x01	/* clear timeout. Note: writing
+					 * to this register clears the
+					 * timeout error int. or status
+					 */
+
+
+/*
+ * The data register reads/writes to/from the 5380 in pseudo-DMA mode
+ */ 
+
+#define P_DATA_REG_OFFSET	0x5c00	/* rw */
+
+#define P_STATUS_REG_OFFSET	0x5c01	/* ro */
+#define P_ST_RDY		0x80	/* 5380 DDRQ Status */
+
+#define P_IRQ_STATUS		0x5c03
+#define P_IS_IRQ		0x80	/* DIRQ status */
+
+#define PCB_CONFIG 0x803
+#define MASTER_ADDRESS_PTR 0x9a01  /* Fixed position - no relo */
+#define SYS_CONFIG_4 0x8003
+#define WAIT_STATE 0xbc00
+#define OPERATION_MODE_1 0xec03
+#define IO_CONFIG_3 0xf002
+
+
+#ifndef ASM
+
+#ifndef CMD_PER_LUN
+#define CMD_PER_LUN 2
+#endif
+
+#ifndef CAN_QUEUE
+#define CAN_QUEUE 32 
+#endif
+
+#define NCR5380_implementation_fields \
+    volatile unsigned short io_port
+
+#define NCR5380_local_declare() \
+    volatile unsigned short io_port
+
+#define NCR5380_setup(instance) \
+    io_port = (instance)->io_port
+
+#define PAS16_io_port(reg) ( io_port + pas16_offset[(reg)] )
+
+#if !(PDEBUG & PDEBUG_TRANSFER) 
+#define NCR5380_read(reg) ( inb(PAS16_io_port(reg)) )
+#define NCR5380_write(reg, value) ( outb((value),PAS16_io_port(reg)) )
+#else
+#define NCR5380_read(reg)						\
+    (((unsigned char) printk("scsi%d : read register %d at io_port %04x\n"\
+    , instance->hostno, (reg), PAS16_io_port(reg))), inb( PAS16_io_port(reg)) )
+
+#define NCR5380_write(reg, value) 					\
+    (printk("scsi%d : write %02x to register %d at io_port %04x\n", 	\
+	    instance->hostno, (value), (reg), PAS16_io_port(reg)),	\
+    outb( (value),PAS16_io_port(reg) ) )
+
+#endif
+
+
+#define NCR5380_intr pas16_intr
+#define do_NCR5380_intr do_pas16_intr
+#define NCR5380_queue_command pas16_queue_command
+#define NCR5380_abort pas16_abort
+#define NCR5380_bus_reset pas16_bus_reset
+#define NCR5380_info pas16_info
+#define NCR5380_show_info pas16_show_info
+#define NCR5380_write_info pas16_write_info
+
+/* 15 14 12 10 7 5 3 
+   1101 0100 1010 1000 */
+   
+#define PAS16_IRQS 0xd4a8 
+
+#endif /* ndef ASM */
+#endif /* PAS16_H */