[SCSI] dec_esp: Remove driver

This driver depends on the deprecated NCR53C9X core and needs to be converted
to the esp_scsi core.

Acked-by: Boaz Harrosh <bharrosh@panasas.com>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

3 files changed, 0 insertions, 699 deletions

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 21675ae83901..9680f82b3ecf 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -350,17 +350,6 @@ config SGIWD93_SCSI
 	  If you have a Western Digital WD93 SCSI controller on
 	  an SGI MIPS system, say Y.  Otherwise, say N.
 
-config SCSI_DECNCR
-	tristate "DEC NCR53C94 Scsi Driver"
-	depends on MACH_DECSTATION && SCSI && TC
-	help
-	  Say Y here to support the NCR53C94 SCSI controller chips on IOASIC
-	  based TURBOchannel DECstations and TURBOchannel PMAZ-A cards.
-
-config SCSI_DECSII
-	tristate "DEC SII Scsi Driver"
-	depends on MACH_DECSTATION && SCSI && 32BIT
-
 config BLK_DEV_3W_XXXX_RAID
 	tristate "3ware 5/6/7/8xxx ATA-RAID support"
 	depends on PCI && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 9c9fa7f5c98a..576cfc68d469 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -111,7 +111,6 @@ obj-$(CONFIG_SCSI_QLOGICPTI)	+= qlogicpti.o
 obj-$(CONFIG_BLK_DEV_IDESCSI)	+= ide-scsi.o
 obj-$(CONFIG_SCSI_MESH)		+= mesh.o
 obj-$(CONFIG_SCSI_MAC53C94)	+= mac53c94.o
-obj-$(CONFIG_SCSI_DECNCR)	+= NCR53C9x.o	dec_esp.o
 obj-$(CONFIG_BLK_DEV_3W_XXXX_RAID) += 3w-xxxx.o
 obj-$(CONFIG_SCSI_3W_9XXX)	+= 3w-9xxx.o
 obj-$(CONFIG_SCSI_PPA)		+= ppa.o
diff --git a/drivers/scsi/dec_esp.c b/drivers/scsi/dec_esp.c
deleted file mode 100644
index d42ad663ffee..000000000000
--- a/drivers/scsi/dec_esp.c
+++ /dev/null
@@ -1,687 +0,0 @@
-/*
- * dec_esp.c: Driver for SCSI chips on IOASIC based TURBOchannel DECstations
- *            and TURBOchannel PMAZ-A cards
- *
- * TURBOchannel changes by Harald Koerfgen
- * PMAZ-A support by David Airlie
- *
- * based on jazz_esp.c:
- * Copyright (C) 1997 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
- *
- * jazz_esp is based on David S. Miller's ESP driver and cyber_esp
- *
- * 20000819 - Small PMAZ-AA fixes by Florian Lohoff <flo@rfc822.org>
- *            Be warned the PMAZ-AA works currently as a single card.
- *            Dont try to put multiple cards in one machine - They are
- *            both detected but it may crash under high load garbling your
- *            data.
- * 20001005	- Initialization fixes for 2.4.0-test9
- * 			  Florian Lohoff <flo@rfc822.org>
- *
- *	Copyright (C) 2002, 2003, 2005, 2006  Maciej W. Rozycki
- */
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/stat.h>
-#include <linux/tc.h>
-
-#include <asm/dma.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-
-#include <asm/dec/interrupts.h>
-#include <asm/dec/ioasic.h>
-#include <asm/dec/ioasic_addrs.h>
-#include <asm/dec/ioasic_ints.h>
-#include <asm/dec/machtype.h>
-#include <asm/dec/system.h>
-
-#define DEC_SCSI_SREG 0
-#define DEC_SCSI_DMAREG 0x40000
-#define DEC_SCSI_SRAM 0x80000
-#define DEC_SCSI_DIAG 0xC0000
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static void dma_drain(struct NCR_ESP *esp);
-static int  dma_can_transfer(struct NCR_ESP *esp, struct scsi_cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length);
-static void dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write);
-static void dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-static void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-static void dma_advance_sg(struct scsi_cmnd * sp);
-
-static void pmaz_dma_drain(struct NCR_ESP *esp);
-static void pmaz_dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length);
-static void pmaz_dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length);
-static void pmaz_dma_ints_off(struct NCR_ESP *esp);
-static void pmaz_dma_ints_on(struct NCR_ESP *esp);
-static void pmaz_dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write);
-static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-
-#define TC_ESP_RAM_SIZE 0x20000
-#define ESP_TGT_DMA_SIZE ((TC_ESP_RAM_SIZE/7) & ~(sizeof(int)-1))
-#define ESP_NCMD 7
-
-#define TC_ESP_DMAR_MASK  0x1ffff
-#define TC_ESP_DMAR_WRITE 0x80000000
-#define TC_ESP_DMA_ADDR(x) ((unsigned)(x) & TC_ESP_DMAR_MASK)
-
-u32 esp_virt_buffer;
-int scsi_current_length;
-
-volatile unsigned char cmd_buffer[16];
-volatile unsigned char pmaz_cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are trasfered to the ESP chip
-				 * via PIO.
-				 */
-
-static irqreturn_t scsi_dma_merr_int(int, void *);
-static irqreturn_t scsi_dma_err_int(int, void *);
-static irqreturn_t scsi_dma_int(int, void *);
-
-static struct scsi_host_template dec_esp_template = {
-	.module			= THIS_MODULE,
-	.name			= "NCR53C94",
-	.info			= esp_info,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.proc_info		= esp_proc_info,
-	.proc_name		= "dec_esp",
-	.can_queue		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= DISABLE_CLUSTERING,
-};
-
-static struct NCR_ESP *dec_esp_platform;
-
-/***************************************************************** Detection */
-static int dec_esp_platform_probe(void)
-{
-	struct NCR_ESP *esp;
-	int err = 0;
-
-	if (IOASIC) {
-		esp = esp_allocate(&dec_esp_template, NULL, 1);
-
-		/* Do command transfer with programmed I/O */
-		esp->do_pio_cmds = 1;
-
-		/* Required functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = &dma_init_read;
-		esp->dma_init_write = &dma_init_write;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-		esp->dma_irq_p = &dma_irq_p;
-		esp->dma_ports_p = &dma_ports_p;
-		esp->dma_setup = &dma_setup;
-
-		/* Optional functions */
-		esp->dma_barrier = 0;
-		esp->dma_drain = &dma_drain;
-		esp->dma_invalidate = 0;
-		esp->dma_irq_entry = 0;
-		esp->dma_irq_exit = 0;
-		esp->dma_poll = 0;
-		esp->dma_reset = 0;
-		esp->dma_led_off = 0;
-		esp->dma_led_on = 0;
-
-		/* virtual DMA functions */
-		esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one;
-		esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl;
-		esp->dma_mmu_release_scsi_one = 0;
-		esp->dma_mmu_release_scsi_sgl = 0;
-		esp->dma_advance_sg = &dma_advance_sg;
-
-
-		/* SCSI chip speed */
-		esp->cfreq = 25000000;
-
-		esp->dregs = 0;
-
-		/* ESP register base */
-		esp->eregs = (void *)CKSEG1ADDR(dec_kn_slot_base +
-						IOASIC_SCSI);
-
-		/* Set the command buffer */
-		esp->esp_command = (volatile unsigned char *) cmd_buffer;
-
-		/* get virtual dma address for command buffer */
-		esp->esp_command_dvma = virt_to_phys(cmd_buffer);
-
-		esp->irq = dec_interrupt[DEC_IRQ_ASC];
-
-		esp->scsi_id = 7;
-
-		/* Check for differential SCSI-bus */
-		esp->diff = 0;
-
-		err = request_irq(esp->irq, esp_intr, IRQF_DISABLED,
-				  "ncr53c94", esp->ehost);
-		if (err)
-			goto err_alloc;
-		err = request_irq(dec_interrupt[DEC_IRQ_ASC_MERR],
-				  scsi_dma_merr_int, IRQF_DISABLED,
-				  "ncr53c94 error", esp->ehost);
-		if (err)
-			goto err_irq;
-		err = request_irq(dec_interrupt[DEC_IRQ_ASC_ERR],
-				  scsi_dma_err_int, IRQF_DISABLED,
-				  "ncr53c94 overrun", esp->ehost);
-		if (err)
-			goto err_irq_merr;
-		err = request_irq(dec_interrupt[DEC_IRQ_ASC_DMA], scsi_dma_int,
-				  IRQF_DISABLED, "ncr53c94 dma", esp->ehost);
-		if (err)
-			goto err_irq_err;
-
-		esp_initialize(esp);
-
-		err = scsi_add_host(esp->ehost, NULL);
-		if (err) {
-			printk(KERN_ERR "ESP: Unable to register adapter\n");
-			goto err_irq_dma;
-		}
-
-		scsi_scan_host(esp->ehost);
-
-		dec_esp_platform = esp;
-	}
-
-	return 0;
-
-err_irq_dma:
-	free_irq(dec_interrupt[DEC_IRQ_ASC_DMA], esp->ehost);
-err_irq_err:
-	free_irq(dec_interrupt[DEC_IRQ_ASC_ERR], esp->ehost);
-err_irq_merr:
-	free_irq(dec_interrupt[DEC_IRQ_ASC_MERR], esp->ehost);
-err_irq:
-	free_irq(esp->irq, esp->ehost);
-err_alloc:
-	esp_deallocate(esp);
-	scsi_host_put(esp->ehost);
-	return err;
-}
-
-static int __init dec_esp_probe(struct device *dev)
-{
-	struct NCR_ESP *esp;
-	resource_size_t start, len;
-	int err;
-
-	esp = esp_allocate(&dec_esp_template,  NULL, 1);
-
-	dev_set_drvdata(dev, esp);
-
-	start = to_tc_dev(dev)->resource.start;
-	len = to_tc_dev(dev)->resource.end - start + 1;
-
-	if (!request_mem_region(start, len, dev->bus_id)) {
-		printk(KERN_ERR "%s: Unable to reserve MMIO resource\n",
-		       dev->bus_id);
-		err = -EBUSY;
-		goto err_alloc;
-	}
-
-	/* Store base addr into esp struct.  */
-	esp->slot = start;
-
-	esp->dregs = 0;
-	esp->eregs = (void *)CKSEG1ADDR(start + DEC_SCSI_SREG);
-	esp->do_pio_cmds = 1;
-
-	/* Set the command buffer.  */
-	esp->esp_command = (volatile unsigned char *)pmaz_cmd_buffer;
-
-	/* Get virtual dma address for command buffer.  */
-	esp->esp_command_dvma = virt_to_phys(pmaz_cmd_buffer);
-
-	esp->cfreq = tc_get_speed(to_tc_dev(dev)->bus);
-
-	esp->irq = to_tc_dev(dev)->interrupt;
-
-	/* Required functions.  */
-	esp->dma_bytes_sent = &dma_bytes_sent;
-	esp->dma_can_transfer = &dma_can_transfer;
-	esp->dma_dump_state = &dma_dump_state;
-	esp->dma_init_read = &pmaz_dma_init_read;
-	esp->dma_init_write = &pmaz_dma_init_write;
-	esp->dma_ints_off = &pmaz_dma_ints_off;
-	esp->dma_ints_on = &pmaz_dma_ints_on;
-	esp->dma_irq_p = &dma_irq_p;
-	esp->dma_ports_p = &dma_ports_p;
-	esp->dma_setup = &pmaz_dma_setup;
-
-	/* Optional functions.  */
-	esp->dma_barrier = 0;
-	esp->dma_drain = &pmaz_dma_drain;
-	esp->dma_invalidate = 0;
-	esp->dma_irq_entry = 0;
-	esp->dma_irq_exit = 0;
-	esp->dma_poll = 0;
-	esp->dma_reset = 0;
-	esp->dma_led_off = 0;
-	esp->dma_led_on = 0;
-
-	esp->dma_mmu_get_scsi_one = pmaz_dma_mmu_get_scsi_one;
-	esp->dma_mmu_get_scsi_sgl = 0;
-	esp->dma_mmu_release_scsi_one = 0;
-	esp->dma_mmu_release_scsi_sgl = 0;
-	esp->dma_advance_sg = 0;
-
-	err = request_irq(esp->irq, esp_intr, IRQF_DISABLED, "PMAZ_AA",
-			  esp->ehost);
-	if (err) {
-		printk(KERN_ERR "%s: Unable to get IRQ %d\n",
-		       dev->bus_id, esp->irq);
-		goto err_resource;
-	}
-
-	esp->scsi_id = 7;
-	esp->diff = 0;
-	esp_initialize(esp);
-
-	err = scsi_add_host(esp->ehost, dev);
-	if (err) {
-		printk(KERN_ERR "%s: Unable to register adapter\n",
-		       dev->bus_id);
-		goto err_irq;
-	}
-
-	scsi_scan_host(esp->ehost);
-
-	return 0;
-
-err_irq:
-	free_irq(esp->irq, esp->ehost);
-
-err_resource:
-	release_mem_region(start, len);
-
-err_alloc:
-	esp_deallocate(esp);
-	scsi_host_put(esp->ehost);
-	return err;
-}
-
-static void __exit dec_esp_platform_remove(void)
-{
-	struct NCR_ESP *esp = dec_esp_platform;
-
-	free_irq(esp->irq, esp->ehost);
-	esp_deallocate(esp);
-	scsi_host_put(esp->ehost);
-	dec_esp_platform = NULL;
-}
-
-static void __exit dec_esp_remove(struct device *dev)
-{
-	struct NCR_ESP *esp = dev_get_drvdata(dev);
-
-	free_irq(esp->irq, esp->ehost);
-	esp_deallocate(esp);
-	scsi_host_put(esp->ehost);
-}
-
-
-/************************************************************* DMA Functions */
-static irqreturn_t scsi_dma_merr_int(int irq, void *dev_id)
-{
-	printk("Got unexpected SCSI DMA Interrupt! < ");
-	printk("SCSI_DMA_MEMRDERR ");
-	printk(">\n");
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t scsi_dma_err_int(int irq, void *dev_id)
-{
-	/* empty */
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t scsi_dma_int(int irq, void *dev_id)
-{
-	u32 scsi_next_ptr;
-
-	scsi_next_ptr = ioasic_read(IO_REG_SCSI_DMA_P);
-
-	/* next page */
-	scsi_next_ptr = (((scsi_next_ptr >> 3) + PAGE_SIZE) & PAGE_MASK) << 3;
-	ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
-	fast_iob();
-
-	return IRQ_HANDLED;
-}
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	return fifo_count;
-}
-
-static void dma_drain(struct NCR_ESP *esp)
-{
-	u32 nw, data0, data1, scsi_data_ptr;
-	u16 *p;
-
-	nw = ioasic_read(IO_REG_SCSI_SCR);
-
-	/*
-	 * Is there something in the dma buffers left?
-	 */
-	if (nw) {
-		scsi_data_ptr = ioasic_read(IO_REG_SCSI_DMA_P) >> 3;
-		p = phys_to_virt(scsi_data_ptr);
-		switch (nw) {
-		case 1:
-			data0 = ioasic_read(IO_REG_SCSI_SDR0);
-			p[0] = data0 & 0xffff;
-			break;
-		case 2:
-			data0 = ioasic_read(IO_REG_SCSI_SDR0);
-			p[0] = data0 & 0xffff;
-			p[1] = (data0 >> 16) & 0xffff;
-			break;
-		case 3:
-			data0 = ioasic_read(IO_REG_SCSI_SDR0);
-			data1 = ioasic_read(IO_REG_SCSI_SDR1);
-			p[0] = data0 & 0xffff;
-			p[1] = (data0 >> 16) & 0xffff;
-			p[2] = data1 & 0xffff;
-			break;
-		default:
-			printk("Strange: %d words in dma buffer left\n", nw);
-			break;
-		}
-	}
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
-	return sp->SCp.this_residual;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-}
-
-static void dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length)
-{
-	u32 scsi_next_ptr, ioasic_ssr;
-	unsigned long flags;
-
-	if (vaddress & 3)
-		panic("dec_esp.c: unable to handle partial word transfers, yet...");
-
-	dma_cache_wback_inv((unsigned long) phys_to_virt(vaddress), length);
-
-	spin_lock_irqsave(&ioasic_ssr_lock, flags);
-
-	fast_mb();
-	ioasic_ssr = ioasic_read(IO_REG_SSR);
-
-	ioasic_ssr &= ~IO_SSR_SCSI_DMA_EN;
-	ioasic_write(IO_REG_SSR, ioasic_ssr);
-
-	fast_wmb();
-	ioasic_write(IO_REG_SCSI_SCR, 0);
-	ioasic_write(IO_REG_SCSI_DMA_P, vaddress << 3);
-
-	/* prepare for next page */
-	scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
-	ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
-
-	ioasic_ssr |= (IO_SSR_SCSI_DMA_DIR | IO_SSR_SCSI_DMA_EN);
-	fast_wmb();
-	ioasic_write(IO_REG_SSR, ioasic_ssr);
-
-	fast_iob();
-	spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
-}
-
-static void dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length)
-{
-	u32 scsi_next_ptr, ioasic_ssr;
-	unsigned long flags;
-
-	if (vaddress & 3)
-		panic("dec_esp.c: unable to handle partial word transfers, yet...");
-
-	dma_cache_wback_inv((unsigned long) phys_to_virt(vaddress), length);
-
-	spin_lock_irqsave(&ioasic_ssr_lock, flags);
-
-	fast_mb();
-	ioasic_ssr = ioasic_read(IO_REG_SSR);
-
-	ioasic_ssr &= ~(IO_SSR_SCSI_DMA_DIR | IO_SSR_SCSI_DMA_EN);
-	ioasic_write(IO_REG_SSR, ioasic_ssr);
-
-	fast_wmb();
-	ioasic_write(IO_REG_SCSI_SCR, 0);
-	ioasic_write(IO_REG_SCSI_DMA_P, vaddress << 3);
-
-	/* prepare for next page */
-	scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
-	ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
-
-	ioasic_ssr |= IO_SSR_SCSI_DMA_EN;
-	fast_wmb();
-	ioasic_write(IO_REG_SSR, ioasic_ssr);
-
-	fast_iob();
-	spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	disable_irq(dec_interrupt[DEC_IRQ_ASC_DMA]);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	enable_irq(dec_interrupt[DEC_IRQ_ASC_DMA]);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	return (esp->eregs->esp_status & ESP_STAT_INTR);
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	/*
-	 * FIXME: what's this good for?
-	 */
-	return 1;
-}
-
-static void dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write)
-{
-	/*
-	 * DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if (write)
-		dma_init_read(esp, addr, count);
-	else
-		dma_init_write(esp, addr, count);
-}
-
-static void dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
-	sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
-}
-
-static void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
-	int sz = sp->SCp.buffers_residual;
-	struct scatterlist *sg = sp->SCp.buffer;
-
-	while (sz >= 0) {
-		sg[sz].dma_address = page_to_phys(sg[sz].page) + sg[sz].offset;
-		sz--;
-	}
-	sp->SCp.ptr = (char *)(sp->SCp.buffer->dma_address);
-}
-
-static void dma_advance_sg(struct scsi_cmnd * sp)
-{
-	sp->SCp.ptr = (char *)(sp->SCp.buffer->dma_address);
-}
-
-static void pmaz_dma_drain(struct NCR_ESP *esp)
-{
-	memcpy(phys_to_virt(esp_virt_buffer),
-	       (void *)CKSEG1ADDR(esp->slot + DEC_SCSI_SRAM +
-				  ESP_TGT_DMA_SIZE),
-	       scsi_current_length);
-}
-
-static void pmaz_dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length)
-{
-	volatile u32 *dmareg =
-		(volatile u32 *)CKSEG1ADDR(esp->slot + DEC_SCSI_DMAREG);
-
-	if (length > ESP_TGT_DMA_SIZE)
-		length = ESP_TGT_DMA_SIZE;
-
-	*dmareg = TC_ESP_DMA_ADDR(ESP_TGT_DMA_SIZE);
-
-	iob();
-
-	esp_virt_buffer = vaddress;
-	scsi_current_length = length;
-}
-
-static void pmaz_dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length)
-{
-	volatile u32 *dmareg =
-		(volatile u32 *)CKSEG1ADDR(esp->slot + DEC_SCSI_DMAREG);
-
-	memcpy((void *)CKSEG1ADDR(esp->slot + DEC_SCSI_SRAM +
-				  ESP_TGT_DMA_SIZE),
-	       phys_to_virt(vaddress), length);
-
-	wmb();
-	*dmareg = TC_ESP_DMAR_WRITE | TC_ESP_DMA_ADDR(ESP_TGT_DMA_SIZE);
-
-	iob();
-}
-
-static void pmaz_dma_ints_off(struct NCR_ESP *esp)
-{
-}
-
-static void pmaz_dma_ints_on(struct NCR_ESP *esp)
-{
-}
-
-static void pmaz_dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write)
-{
-	/*
-	 * DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if (write)
-		pmaz_dma_init_read(esp, addr, count);
-	else
-		pmaz_dma_init_write(esp, addr, count);
-}
-
-static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
-	sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
-}
-
-
-#ifdef CONFIG_TC
-static int __init dec_esp_tc_probe(struct device *dev);
-static int __exit dec_esp_tc_remove(struct device *dev);
-
-static const struct tc_device_id dec_esp_tc_table[] = {
-        { "DEC     ", "PMAZ-AA " },
-        { }
-};
-MODULE_DEVICE_TABLE(tc, dec_esp_tc_table);
-
-static struct tc_driver dec_esp_tc_driver = {
-        .id_table       = dec_esp_tc_table,
-        .driver         = {
-                .name   = "dec_esp",
-                .bus    = &tc_bus_type,
-                .probe  = dec_esp_tc_probe,
-                .remove = __exit_p(dec_esp_tc_remove),
-        },
-};
-
-static int __init dec_esp_tc_probe(struct device *dev)
-{
-	int status = dec_esp_probe(dev);
-	if (!status)
-		get_device(dev);
-	return status;
-}
-
-static int __exit dec_esp_tc_remove(struct device *dev)
-{
-	put_device(dev);
-	dec_esp_remove(dev);
-	return 0;
-}
-#endif
-
-static int __init dec_esp_init(void)
-{
-	int status;
-
-	status = tc_register_driver(&dec_esp_tc_driver);
-	if (!status)
-		dec_esp_platform_probe();
-
-	if (nesps) {
-		pr_info("ESP: Total of %d ESP hosts found, "
-			"%d actually in use.\n", nesps, esps_in_use);
-		esps_running = esps_in_use;
-	}
-
-	return status;
-}
-
-static void __exit dec_esp_exit(void)
-{
-	dec_esp_platform_remove();
-	tc_unregister_driver(&dec_esp_tc_driver);
-}
-
-
-module_init(dec_esp_init);
-module_exit(dec_esp_exit);