ncr5380: Remove NCR5380_local_declare and NCR5380_setup macros

The NCR5380_local_declare and NCR5380_setup macros exist to define and
initialize a particular local variable, to provide the address of the
chip registers needed for the driver's implementation of its
NCR5380_read/write register access macros.

In cumana_1 and macscsi, these macros generate pointless code like this,
	struct Scsi_Host *_instance;
	_instance = instance;

In pas16, the use of NCR5380_read/write in pas16_hw_detect() requires that
the io_port local variable has been defined and initialized, but the
NCR5380_local_declare and NCR5380_setup macros can't be used for that
purpose because the Scsi_Host struct has not yet been instantiated.

Moreover, these macros were removed from atari_NCR5380.c long ago and
now they constitute yet another discrepancy between the two core driver
forks.

Remove these "optimizations".

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

13 files changed, 77 insertions, 161 deletions

diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index ed8346fcd516..e4cd85e1ea5b 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -230,11 +230,6 @@
  * USLEEP_POLL - amount of time, in jiffies, to poll
  *
  * These macros MUST be defined :
- * NCR5380_local_declare() - declare any local variables needed for your
- *      transfer routines.
- *
- * NCR5380_setup(instance) - initialize any local variables needed from a given
- *      instance of the host adapter for NCR5380_{read,write,pread,pwrite}
  * 
  * NCR5380_read(register)  - read from the specified register
  *
@@ -267,8 +262,8 @@
  * possible) function may be used.
  */
 
-static int do_abort(struct Scsi_Host *host);
-static void do_reset(struct Scsi_Host *host);
+static int do_abort(struct Scsi_Host *);
+static void do_reset(struct Scsi_Host *);
 
 /*
  *	initialize_SCp		-	init the scsi pointer field
@@ -313,12 +308,9 @@ static inline void initialize_SCp(struct scsi_cmnd *cmd)
  
 static int NCR5380_poll_politely(struct Scsi_Host *instance, int reg, int bit, int val, int t)
 {
-	NCR5380_local_declare();
 	int n = 500;		/* At about 8uS a cycle for the cpu access */
 	unsigned long end = jiffies + t;
 	int r;
-	
-	NCR5380_setup(instance);
 
 	while( n-- > 0)
 	{
@@ -406,9 +398,7 @@ mrs[] = {
 
 static void NCR5380_print(struct Scsi_Host *instance)
 {
-	NCR5380_local_declare();
 	unsigned char status, data, basr, mr, icr, i;
-	NCR5380_setup(instance);
 
 	data = NCR5380_read(CURRENT_SCSI_DATA_REG);
 	status = NCR5380_read(STATUS_REG);
@@ -447,10 +437,8 @@ static void NCR5380_print(struct Scsi_Host *instance)
 
 static void NCR5380_print_phase(struct Scsi_Host *instance)
 {
-	NCR5380_local_declare();
 	unsigned char status;
 	int i;
-	NCR5380_setup(instance);
 
 	status = NCR5380_read(STATUS_REG);
 	if (!(status & SR_REQ))
@@ -566,11 +554,9 @@ static irqreturn_t __init probe_intr(int irq, void *dev_id)
 static int __init __maybe_unused NCR5380_probe_irq(struct Scsi_Host *instance,
 						int possible)
 {
-	NCR5380_local_declare();
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
 	unsigned long timeout;
 	int trying_irqs, i, mask;
-	NCR5380_setup(instance);
 
 	for (trying_irqs = 0, i = 1, mask = 2; i < 16; ++i, mask <<= 1)
 		if ((mask & possible) && (request_irq(i, &probe_intr, 0, "NCR-probe", NULL) == 0))
@@ -791,7 +777,6 @@ static void lprint_opcode(int opcode, struct seq_file *m)
 
 static int NCR5380_init(struct Scsi_Host *instance, int flags)
 {
-	NCR5380_local_declare();
 	int i, pass;
 	unsigned long timeout;
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
@@ -808,8 +793,6 @@ static int NCR5380_init(struct Scsi_Host *instance, int flags)
 		instance->NCR5380_instance_name += NCR53C400_address_adjust;
 #endif
 
-	NCR5380_setup(instance);
-
 	hostdata->aborted = 0;
 	hostdata->id_mask = 1 << instance->this_id;
 	for (i = hostdata->id_mask; i <= 0x80; i <<= 1)
@@ -1100,7 +1083,6 @@ static void NCR5380_main(struct work_struct *work)
 
 static irqreturn_t NCR5380_intr(int dummy, void *dev_id)
 {
-	NCR5380_local_declare();
 	struct Scsi_Host *instance = dev_id;
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
 	int done;
@@ -1114,7 +1096,6 @@ static irqreturn_t NCR5380_intr(int dummy, void *dev_id)
 		done = 1;
 		spin_lock_irqsave(instance->host_lock, flags);
 		/* Look for pending interrupts */
-		NCR5380_setup(instance);
 		basr = NCR5380_read(BUS_AND_STATUS_REG);
 		/* XXX dispatch to appropriate routine if found and done=0 */
 		if (basr & BASR_IRQ) {
@@ -1205,7 +1186,6 @@ static irqreturn_t NCR5380_intr(int dummy, void *dev_id)
  
 static int NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
 {
-	NCR5380_local_declare();
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
 	unsigned char tmp[3], phase;
 	unsigned char *data;
@@ -1213,7 +1193,6 @@ static int NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
 	unsigned long timeout;
 	unsigned char value;
 	int err;
-	NCR5380_setup(instance);
 
 	if (hostdata->selecting)
 		goto part2;
@@ -1487,7 +1466,6 @@ failed:
  */
 
 static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data) {
-	NCR5380_local_declare();
 	unsigned char p = *phase, tmp;
 	int c = *count;
 	unsigned char *d = *data;
@@ -1496,7 +1474,6 @@ static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase
 	 */
 	int break_allowed = 0;
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
-	NCR5380_setup(instance);
 
 	if (!(p & SR_IO))
 		dprintk(NDEBUG_PIO, "scsi%d : pio write %d bytes\n", instance->host_no, c);
@@ -1623,10 +1600,8 @@ static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase
  *	Locks: caller holds queue lock
  */
  
-static void do_reset(struct Scsi_Host *host) {
-	NCR5380_local_declare();
-	NCR5380_setup(host);
-
+static void do_reset(struct Scsi_Host *instance)
+{
 	NCR5380_write(TARGET_COMMAND_REG, PHASE_SR_TO_TCR(NCR5380_read(STATUS_REG) & PHASE_MASK));
 	NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_RST);
 	udelay(25);
@@ -1645,13 +1620,11 @@ static void do_reset(struct Scsi_Host *host) {
  *	FIXME: sort this out and get new_eh running
  */
 
-static int do_abort(struct Scsi_Host *host) {
-	NCR5380_local_declare();
+static int do_abort(struct Scsi_Host *instance)
+{
 	unsigned char *msgptr, phase, tmp;
 	int len;
 	int rc;
-	NCR5380_setup(host);
-
 
 	/* Request message out phase */
 	NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_ATN);
@@ -1666,7 +1639,7 @@ static int do_abort(struct Scsi_Host *host) {
 	 * the target sees, so we just handshake.
 	 */
 
-	rc = NCR5380_poll_politely(host, STATUS_REG, SR_REQ, SR_REQ, 60 * HZ);
+	rc = NCR5380_poll_politely(instance, STATUS_REG, SR_REQ, SR_REQ, 60 * HZ);
 	
 	if(rc < 0)
 		return -1;
@@ -1677,7 +1650,7 @@ static int do_abort(struct Scsi_Host *host) {
 
 	if ((tmp & PHASE_MASK) != PHASE_MSGOUT) {
 		NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_ATN | ICR_ASSERT_ACK);
-		rc = NCR5380_poll_politely(host, STATUS_REG, SR_REQ, 0, 3*HZ);
+		rc = NCR5380_poll_politely(instance, STATUS_REG, SR_REQ, 0, 3 * HZ);
 		NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_ATN);
 		if(rc == -1)
 			return -1;
@@ -1686,7 +1659,7 @@ static int do_abort(struct Scsi_Host *host) {
 	msgptr = &tmp;
 	len = 1;
 	phase = PHASE_MSGOUT;
-	NCR5380_transfer_pio(host, &phase, &len, &msgptr);
+	NCR5380_transfer_pio(instance, &phase, &len, &msgptr);
 
 	/*
 	 * If we got here, and the command completed successfully,
@@ -1719,7 +1692,6 @@ static int do_abort(struct Scsi_Host *host) {
 
 
 static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data) {
-	NCR5380_local_declare();
 	register int c = *count;
 	register unsigned char p = *phase;
 	register unsigned char *d = *data;
@@ -1732,8 +1704,6 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase
 
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
 
-	NCR5380_setup(instance);
-
 	if ((tmp = (NCR5380_read(STATUS_REG) & PHASE_MASK)) != p) {
 		*phase = tmp;
 		return -1;
@@ -2000,7 +1970,6 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase
  */
 
 static void NCR5380_information_transfer(struct Scsi_Host *instance) {
-	NCR5380_local_declare();
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *)instance->hostdata;
 	unsigned char msgout = NOP;
 	int sink = 0;
@@ -2014,8 +1983,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) {
 	/* RvC: we need to set the end of the polling time */
 	unsigned long poll_time = jiffies + USLEEP_POLL;
 
-	NCR5380_setup(instance);
-
 	while (1) {
 		tmp = NCR5380_read(STATUS_REG);
 		/* We only have a valid SCSI phase when REQ is asserted */
@@ -2406,7 +2373,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) {
  */
 
 static void NCR5380_reselect(struct Scsi_Host *instance) {
-	NCR5380_local_declare();
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *)
 	 instance->hostdata;
 	unsigned char target_mask;
@@ -2416,7 +2382,6 @@ static void NCR5380_reselect(struct Scsi_Host *instance) {
 	unsigned char *data;
 	struct scsi_cmnd *tmp = NULL, *prev;
 	int abort = 0;
-	NCR5380_setup(instance);
 
 	/*
 	 * Disable arbitration, etc. since the host adapter obviously
@@ -2525,10 +2490,8 @@ static void NCR5380_reselect(struct Scsi_Host *instance) {
 
 #ifdef REAL_DMA
 static void NCR5380_dma_complete(NCR5380_instance * instance) {
-	NCR5380_local_declare();
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
 	int transferred;
-	NCR5380_setup(instance);
 
 	/*
 	 * XXX this might not be right.
@@ -2581,7 +2544,6 @@ static void NCR5380_dma_complete(NCR5380_instance * instance) {
 
 static int NCR5380_abort(struct scsi_cmnd *cmd)
 {
-	NCR5380_local_declare();
 	struct Scsi_Host *instance = cmd->device->host;
 	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
 	struct scsi_cmnd *tmp, **prev;
@@ -2590,8 +2552,6 @@ static int NCR5380_abort(struct scsi_cmnd *cmd)
 
 	NCR5380_print_status(instance);
 
-	NCR5380_setup(instance);
-
 	dprintk(NDEBUG_ABORT, "scsi%d : abort called\n", instance->host_no);
 	dprintk(NDEBUG_ABORT, "        basr 0x%X, sr 0x%X\n", NCR5380_read(BUS_AND_STATUS_REG), NCR5380_read(STATUS_REG));
 
@@ -2737,8 +2697,6 @@ static int NCR5380_bus_reset(struct scsi_cmnd *cmd)
 {
 	struct Scsi_Host *instance = cmd->device->host;
 
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
 	NCR5380_print_status(instance);
 
 	spin_lock_irq(instance->host_lock);
diff --git a/drivers/scsi/arm/cumana_1.c b/drivers/scsi/arm/cumana_1.c
index d28d6c0f18c0..8996a6ccc08f 100644
--- a/drivers/scsi/arm/cumana_1.c
+++ b/drivers/scsi/arm/cumana_1.c
@@ -20,10 +20,8 @@
 #define PSEUDO_DMA
 
 #define priv(host)			((struct NCR5380_hostdata *)(host)->hostdata)
-#define NCR5380_local_declare()		struct Scsi_Host *_instance
-#define NCR5380_setup(instance)		_instance = instance
-#define NCR5380_read(reg)		cumanascsi_read(_instance, reg)
-#define NCR5380_write(reg, value)	cumanascsi_write(_instance, reg, value)
+#define NCR5380_read(reg)		cumanascsi_read(instance, reg)
+#define NCR5380_write(reg, value)	cumanascsi_write(instance, reg, value)
 #define NCR5380_intr			cumanascsi_intr
 #define NCR5380_queue_command		cumanascsi_queue_command
 #define NCR5380_info			cumanascsi_info
diff --git a/drivers/scsi/arm/oak.c b/drivers/scsi/arm/oak.c
index 7c6fa1479c9c..aa5310bef9b7 100644
--- a/drivers/scsi/arm/oak.c
+++ b/drivers/scsi/arm/oak.c
@@ -20,11 +20,12 @@
 #define DONT_USE_INTR
 
 #define priv(host)			((struct NCR5380_hostdata *)(host)->hostdata)
-#define NCR5380_local_declare()		void __iomem *_base
-#define NCR5380_setup(host)		_base = priv(host)->base
 
-#define NCR5380_read(reg)		readb(_base + ((reg) << 2))
-#define NCR5380_write(reg, value)	writeb(value, _base + ((reg) << 2))
+#define NCR5380_read(reg) \
+	readb(priv(instance)->base + ((reg) << 2))
+#define NCR5380_write(reg, value) \
+	writeb(value, priv(instance)->base + ((reg) << 2))
+
 #define NCR5380_queue_command		oakscsi_queue_command
 #define NCR5380_info			oakscsi_info
 #define NCR5380_show_info		oakscsi_show_info
diff --git a/drivers/scsi/dmx3191d.c b/drivers/scsi/dmx3191d.c
index 3e088125a8be..8d2984d7fa9c 100644
--- a/drivers/scsi/dmx3191d.c
+++ b/drivers/scsi/dmx3191d.c
@@ -36,12 +36,10 @@
 
 #define DONT_USE_INTR
 
-#define NCR5380_read(reg)		inb(port + reg)
-#define NCR5380_write(reg, value)	outb(value, port + reg)
+#define NCR5380_read(reg)		inb(instance->io_port + reg)
+#define NCR5380_write(reg, value)	outb(value, instance->io_port + reg)
 
 #define NCR5380_implementation_fields	/* none */
-#define NCR5380_local_declare()		unsigned int port
-#define NCR5380_setup(instance)		port = instance->io_port
 
 /*
  * Includes needed for NCR5380.[ch] (XXX: Move them to NCR5380.h)
diff --git a/drivers/scsi/dtc.c b/drivers/scsi/dtc.c
index 38325f979b90..43c1739639ba 100644
--- a/drivers/scsi/dtc.c
+++ b/drivers/scsi/dtc.c
@@ -325,8 +325,6 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
 	unsigned char *d = dst;
 	int i;			/* For counting time spent in the poll-loop */
 	struct NCR5380_hostdata *hostdata = shost_priv(instance);
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
 
 	i = 0;
 	NCR5380_read(RESET_PARITY_INTERRUPT_REG);
@@ -342,7 +340,7 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
 		while (NCR5380_read(DTC_CONTROL_REG) & CSR_HOST_BUF_NOT_RDY)
 			++i;
 		rtrc(3);
-		memcpy_fromio(d, base + DTC_DATA_BUF, 128);
+		memcpy_fromio(d, hostdata->base + DTC_DATA_BUF, 128);
 		d += 128;
 		len -= 128;
 		rtrc(7);
@@ -377,8 +375,6 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
 {
 	int i;
 	struct NCR5380_hostdata *hostdata = shost_priv(instance);
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
 
 	NCR5380_read(RESET_PARITY_INTERRUPT_REG);
 	NCR5380_write(MODE_REG, MR_ENABLE_EOP_INTR | MR_DMA_MODE);
@@ -394,7 +390,7 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
 		while (NCR5380_read(DTC_CONTROL_REG) & CSR_HOST_BUF_NOT_RDY)
 			++i;
 		rtrc(3);
-		memcpy_toio(base + DTC_DATA_BUF, src, 128);
+		memcpy_toio(hostdata->base + DTC_DATA_BUF, src, 128);
 		src += 128;
 		len -= 128;
 	}
@@ -420,15 +416,15 @@ MODULE_LICENSE("GPL");
 
 static int dtc_release(struct Scsi_Host *shost)
 {
-	NCR5380_local_declare();
-	NCR5380_setup(shost);
+	struct NCR5380_hostdata *hostdata = shost_priv(shost);
+
 	if (shost->irq != NO_IRQ)
 		free_irq(shost->irq, shost);
 	NCR5380_exit(shost);
 	if (shost->io_port && shost->n_io_port)
 		release_region(shost->io_port, shost->n_io_port);
 	scsi_unregister(shost);
-	iounmap(base);
+	iounmap(hostdata->base);
 	return 0;
 }
 
diff --git a/drivers/scsi/dtc.h b/drivers/scsi/dtc.h
index 46483b280046..07b0ac98817c 100644
--- a/drivers/scsi/dtc.h
+++ b/drivers/scsi/dtc.h
@@ -21,13 +21,8 @@
 #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 DTC_address(reg) (base + DTC_5380_OFFSET + reg)
+#define DTC_address(reg) \
+	(((struct NCR5380_hostdata *)shost_priv(instance))->base + DTC_5380_OFFSET + reg)
 
 #define NCR5380_read(reg) (readb(DTC_address(reg)))
 #define NCR5380_write(reg, value) (writeb(value, DTC_address(reg)))
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index 4cca9734175e..21f8236df48f 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -459,9 +459,6 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
  
 static int generic_NCR5380_release_resources(struct Scsi_Host *instance)
 {
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
-	
 	if (instance->irq != NO_IRQ)
 		free_irq(instance->irq, instance);
 	NCR5380_exit(instance);
@@ -520,13 +517,13 @@ generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
  
 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
 {
+#ifdef SCSI_G_NCR5380_MEM
+	struct NCR5380_hostdata *hostdata = shost_priv(instance);
+#endif
 	int blocks = len / 128;
 	int start = 0;
 	int bl;
 
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
-
 	NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
 	NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
 	while (1) {
@@ -547,7 +544,8 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
 		}
 #else
 		/* implies SCSI_G_NCR5380_MEM */
-		memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
+		memcpy_fromio(dst + start,
+		              hostdata->iomem + NCR53C400_host_buffer, 128);
 #endif
 		start += 128;
 		blocks--;
@@ -567,7 +565,8 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
 		}
 #else
 		/* implies SCSI_G_NCR5380_MEM */
-		memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
+		memcpy_fromio(dst + start,
+		              hostdata->iomem + NCR53C400_host_buffer, 128);
 #endif
 		start += 128;
 		blocks--;
@@ -604,14 +603,14 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
 
 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
 {
+#ifdef SCSI_G_NCR5380_MEM
+	struct NCR5380_hostdata *hostdata = shost_priv(instance);
+#endif
 	int blocks = len / 128;
 	int start = 0;
 	int bl;
 	int i;
 
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
-
 	NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
 	NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
 	while (1) {
@@ -632,7 +631,8 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
 		}
 #else
 		/* implies SCSI_G_NCR5380_MEM */
-		memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
+		memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
+		            src + start, 128);
 #endif
 		start += 128;
 		blocks--;
@@ -648,7 +648,8 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
 		}
 #else
 		/* implies SCSI_G_NCR5380_MEM */
-		memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
+		memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
+		            src + start, 128);
 #endif
 		start += 128;
 		blocks--;
diff --git a/drivers/scsi/g_NCR5380.h b/drivers/scsi/g_NCR5380.h
index 6669a906a4f7..883c003394cf 100644
--- a/drivers/scsi/g_NCR5380.h
+++ b/drivers/scsi/g_NCR5380.h
@@ -46,17 +46,12 @@
 #define NCR5380_region_size 8
 #endif
 
-#define NCR5380_read(reg) (inb(NCR5380_map_name + (reg)))
-#define NCR5380_write(reg, value) (outb((value), (NCR5380_map_name + (reg))))
+#define NCR5380_read(reg) \
+	inb(instance->io_port + (reg))
+#define NCR5380_write(reg, value) \
+	outb(value, instance->io_port + (reg))
 
-#define NCR5380_implementation_fields \
-    NCR5380_map_type NCR5380_map_name
-
-#define NCR5380_local_declare() \
-    register NCR5380_implementation_fields
-
-#define NCR5380_setup(instance) \
-    NCR5380_map_name = (NCR5380_map_type)((instance)->NCR5380_instance_name)
+#define NCR5380_implementation_fields /* none */
 
 #else 
 /* therefore SCSI_G_NCR5380_MEM */
@@ -70,19 +65,16 @@
 #define NCR53C400_host_buffer 0x3900
 #define NCR5380_region_size 0x3a00
 
-#define NCR5380_read(reg) readb(iomem + NCR53C400_mem_base + (reg))
-#define NCR5380_write(reg, value) writeb(value, iomem + NCR53C400_mem_base + (reg))
+#define NCR5380_read(reg) \
+	readb(((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \
+	      NCR53C400_mem_base + (reg))
+#define NCR5380_write(reg, value) \
+	writeb(value, ((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \
+	       NCR53C400_mem_base + (reg))
 
 #define NCR5380_implementation_fields \
-    NCR5380_map_type NCR5380_map_name; \
     void __iomem *iomem;
 
-#define NCR5380_local_declare() \
-    register void __iomem *iomem
-
-#define NCR5380_setup(instance) \
-    iomem = (((struct NCR5380_hostdata *)(instance)->hostdata)->iomem)
-
 #endif
 
 #define NCR5380_intr generic_NCR5380_intr
diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c
index d64a769b8155..e49a9b1d7c3d 100644
--- a/drivers/scsi/mac_scsi.c
+++ b/drivers/scsi/mac_scsi.c
@@ -32,11 +32,9 @@
 #define PSEUDO_DMA
 
 #define NCR5380_implementation_fields   unsigned char *pdma_base
-#define NCR5380_local_declare()         struct Scsi_Host *_instance
-#define NCR5380_setup(instance)         _instance = instance
 
-#define NCR5380_read(reg)               macscsi_read(_instance, reg)
-#define NCR5380_write(reg, value)       macscsi_write(_instance, reg, value)
+#define NCR5380_read(reg)               macscsi_read(instance, reg)
+#define NCR5380_write(reg, value)       macscsi_write(instance, reg, value)
 
 #define NCR5380_pread                   macscsi_pread
 #define NCR5380_pwrite                  macscsi_pwrite
@@ -129,9 +127,6 @@ static void mac_scsi_reset_boot(struct Scsi_Host *instance)
 {
 	unsigned long end;
 
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
-	
 	/*
 	 * Do a SCSI reset to clean up the bus during initialization. No messing
 	 * with the queues, interrupts, or locks necessary here.
@@ -235,9 +230,6 @@ static int macscsi_pread(struct Scsi_Host *instance,
 	unsigned char *d;
 	unsigned char *s;
 
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
-
 	s = hostdata->pdma_base + (INPUT_DATA_REG << 4);
 	d = dst;
 
@@ -329,9 +321,6 @@ static int macscsi_pwrite(struct Scsi_Host *instance,
 	unsigned char *s;
 	unsigned char *d;
 
-	NCR5380_local_declare();
-	NCR5380_setup(instance);
-
 	s = src;
 	d = hostdata->pdma_base + (OUTPUT_DATA_REG << 4);
 
diff --git a/drivers/scsi/pas16.c b/drivers/scsi/pas16.c
index bf471a3c4e33..e147f5667f27 100644
--- a/drivers/scsi/pas16.c
+++ b/drivers/scsi/pas16.c
@@ -188,7 +188,7 @@ static void __init
 	outb( 0x01, io_port + P_TIMEOUT_STATUS_REG_OFFSET );   /* Reset TC */
 	outb( 0x01, io_port + WAIT_STATE );   /* 1 Wait state */
 
-	NCR5380_read( RESET_PARITY_INTERRUPT_REG );
+	inb(io_port + pas16_offset[RESET_PARITY_INTERRUPT_REG]);
 
 	/* Set the SCSI interrupt pointer without mucking up the sound
 	 * interrupt pointer in the same byte.
@@ -263,13 +263,13 @@ static int __init
      * put in an additional test to try to weed them out.
      */
 
-    outb( 0x01, io_port + WAIT_STATE ); 	/* 1 Wait state */
-    NCR5380_write( MODE_REG, 0x20 );		/* Is it really SCSI? */
-    if( NCR5380_read( MODE_REG ) != 0x20 )	/* Write to a reg.    */
-	return 0;				/* and try to read    */
-    NCR5380_write( MODE_REG, 0x00 );		/* it back.	      */
-    if( NCR5380_read( MODE_REG ) != 0x00 )
-	return 0;
+	outb(0x01, io_port + WAIT_STATE);             /* 1 Wait state */
+	outb(0x20, io_port + pas16_offset[MODE_REG]); /* Is it really SCSI? */
+	if (inb(io_port + pas16_offset[MODE_REG]) != 0x20) /* Write to a reg. */
+		return 0;                                  /* and try to read */
+	outb(0x00, io_port + pas16_offset[MODE_REG]);      /* it back. */
+	if (inb(io_port + pas16_offset[MODE_REG]) != 0x00)
+		return 0;
 
     return 1;
 }
diff --git a/drivers/scsi/pas16.h b/drivers/scsi/pas16.h
index 3634f3fc0325..7247b67fb111 100644
--- a/drivers/scsi/pas16.h
+++ b/drivers/scsi/pas16.h
@@ -103,16 +103,9 @@
 #define CAN_QUEUE 32 
 #endif
 
-#define NCR5380_implementation_fields \
-    volatile unsigned short io_port
+#define NCR5380_implementation_fields /* none */
 
-#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)] )
+#define PAS16_io_port(reg) (instance->io_port + pas16_offset[(reg)])
 
 #define NCR5380_read(reg) ( inb(PAS16_io_port(reg)) )
 #define NCR5380_write(reg, value) ( outb((value),PAS16_io_port(reg)) )
diff --git a/drivers/scsi/t128.c b/drivers/scsi/t128.c
index 339f018f8950..d06ae1d11ca4 100644
--- a/drivers/scsi/t128.c
+++ b/drivers/scsi/t128.c
@@ -248,15 +248,15 @@ found:
 
 static int t128_release(struct Scsi_Host *shost)
 {
-	NCR5380_local_declare();
-	NCR5380_setup(shost);
+	struct NCR5380_hostdata *hostdata = shost_priv(shost);
+
 	if (shost->irq != NO_IRQ)
 		free_irq(shost->irq, shost);
 	NCR5380_exit(shost);
 	if (shost->io_port && shost->n_io_port)
 		release_region(shost->io_port, shost->n_io_port);
 	scsi_unregister(shost);
-	iounmap(base);
+	iounmap(hostdata->base);
 	return 0;
 }
 
@@ -302,14 +302,14 @@ static int t128_biosparam(struct scsi_device *sdev, struct block_device *bdev,
  * 	timeout.
  */
 
-static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
-    int len) {
-    NCR5380_local_declare();
-    void __iomem *reg;
+static inline int
+NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
+{
+	struct NCR5380_hostdata *hostdata = shost_priv(instance);
+	void __iomem *reg, *base = hostdata->base;
     unsigned char *d = dst;
     register int i = len;
 
-    NCR5380_setup(instance);
     reg = base + T_DATA_REG_OFFSET;
 
 #if 0
@@ -348,14 +348,14 @@ static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
  * 	timeout.
  */
 
-static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,
-    int len) {
-    NCR5380_local_declare();
-    void __iomem *reg;
+static inline int
+NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
+{
+	struct NCR5380_hostdata *hostdata = shost_priv(instance);
+	void __iomem *reg, *base = hostdata->base;
     unsigned char *s = src;
     register int i = len;
 
-    NCR5380_setup(instance);
     reg = base + T_DATA_REG_OFFSET;
 
 #if 0
diff --git a/drivers/scsi/t128.h b/drivers/scsi/t128.h
index cdcde3e672fa..ca93c97cf4ba 100644
--- a/drivers/scsi/t128.h
+++ b/drivers/scsi/t128.h
@@ -78,13 +78,8 @@
 #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))
+#define T128_address(reg) \
+	(((struct NCR5380_hostdata *)shost_priv(instance))->base + T_5380_OFFSET + ((reg) * 0x20))
 
 #define NCR5380_read(reg) readb(T128_address(reg))
 #define NCR5380_write(reg, value) writeb((value),(T128_address(reg)))