drivers/scsi/gvp11.c - kernel/msm-5.4 - Gitiles

 #include <linux/types.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/blkdev.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>

 #include <asm/setup.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/amigaints.h>
 #include <asm/amigahw.h>
 #include <linux/zorro.h>
 #include <asm/irq.h>
 #include <linux/spinlock.h>

 #include "scsi.h"
 #include <scsi/scsi_host.h>
 #include "wd33c93.h"
 #include "gvp11.h"

 #include <linux/stat.h>


 #define CHECK_WD33C93

 static irqreturn_t gvp11_intr(int irq, void *data)
 {
 	struct Scsi_Host *instance = data;
 	struct gvp11_scsiregs *regs = (struct gvp11_scsiregs *)(instance->base);
 	unsigned int status = regs->CNTR;
 	unsigned long flags;

 	if (!(status & GVP11_DMAC_INT_PENDING))
 		return IRQ_NONE;

 	spin_lock_irqsave(instance->host_lock, flags);
 	wd33c93_intr(instance);
 	spin_unlock_irqrestore(instance->host_lock, flags);
 	return IRQ_HANDLED;
 }

 static int gvp11_xfer_mask = 0;

 void gvp11_setup(char *str, int *ints)
 {
 	gvp11_xfer_mask = ints[1];
 }

 static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 {
 	struct Scsi_Host *instance = cmd->device->host;
 	struct WD33C93_hostdata *hdata = shost_priv(instance);
 	struct gvp11_scsiregs *regs = (struct gvp11_scsiregs *)(instance->base);
 	unsigned short cntr = GVP11_DMAC_INT_ENABLE;
 	unsigned long addr = virt_to_bus(cmd->SCp.ptr);
 	int bank_mask;
 	static int scsi_alloc_out_of_range = 0;

 	/* use bounce buffer if the physical address is bad */
 	if (addr & hdata->dma_xfer_mask) {
 		hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;

 		if (!scsi_alloc_out_of_range) {
 			hdata->dma_bounce_buffer =
 				kmalloc(hdata->dma_bounce_len, GFP_KERNEL);
 			hdata->dma_buffer_pool = BUF_SCSI_ALLOCED;
 		}

 		if (scsi_alloc_out_of_range ||
 		    !hdata->dma_bounce_buffer) {
 			hdata->dma_bounce_buffer =
 				amiga_chip_alloc(hdata->dma_bounce_len,
 						 "GVP II SCSI Bounce Buffer");

 			if (!hdata->dma_bounce_buffer) {
 				hdata->dma_bounce_len = 0;
 				return 1;
 			}

 			hdata->dma_buffer_pool = BUF_CHIP_ALLOCED;
 		}

 		/* check if the address of the bounce buffer is OK */
 		addr = virt_to_bus(hdata->dma_bounce_buffer);

 		if (addr & hdata->dma_xfer_mask) {
 			/* fall back to Chip RAM if address out of range */
 			if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED) {
 				kfree(hdata->dma_bounce_buffer);
 				scsi_alloc_out_of_range = 1;
 			} else {
 				amiga_chip_free(hdata->dma_bounce_buffer);
 			}

 			hdata->dma_bounce_buffer =
 				amiga_chip_alloc(hdata->dma_bounce_len,
 						 "GVP II SCSI Bounce Buffer");

 			if (!hdata->dma_bounce_buffer) {
 				hdata->dma_bounce_len = 0;
 				return 1;
 			}

 			addr = virt_to_bus(hdata->dma_bounce_buffer);
 			hdata->dma_buffer_pool = BUF_CHIP_ALLOCED;
 		}

 		if (!dir_in) {
 			/* copy to bounce buffer for a write */
 			memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr,
 			       cmd->SCp.this_residual);
 		}
 	}

 	/* setup dma direction */
 	if (!dir_in)
 		cntr |= GVP11_DMAC_DIR_WRITE;

 	hdata->dma_dir = dir_in;
 	regs->CNTR = cntr;

 	/* setup DMA *physical* address */
 	regs->ACR = addr;

 	if (dir_in) {
 		/* invalidate any cache */
 		cache_clear(addr, cmd->SCp.this_residual);
 	} else {
 		/* push any dirty cache */
 		cache_push(addr, cmd->SCp.this_residual);
 	}

 	bank_mask = (~hdata->dma_xfer_mask >> 18) & 0x01c0;
 	if (bank_mask)
 		regs->BANK = bank_mask & (addr >> 18);

 	/* start DMA */
 	regs->ST_DMA = 1;

 	/* return success */
 	return 0;
 }

 static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
 		     int status)
 {
 	struct gvp11_scsiregs *regs = (struct gvp11_scsiregs *)(instance->base);
 	struct WD33C93_hostdata *hdata = shost_priv(instance);

 	/* stop DMA */
 	regs->SP_DMA = 1;
 	/* remove write bit from CONTROL bits */
 	regs->CNTR = GVP11_DMAC_INT_ENABLE;

 	/* copy from a bounce buffer, if necessary */
 	if (status && hdata->dma_bounce_buffer) {
 		if (hdata->dma_dir && SCpnt)
 			memcpy(SCpnt->SCp.ptr, hdata->dma_bounce_buffer,
 			       SCpnt->SCp.this_residual);

 		if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED)
 			kfree(hdata->dma_bounce_buffer);
 		else
 			amiga_chip_free(hdata->dma_bounce_buffer);

 		hdata->dma_bounce_buffer = NULL;
 		hdata->dma_bounce_len = 0;
 	}
 }

 static int __init check_wd33c93(struct gvp11_scsiregs *regs)
 {
 #ifdef CHECK_WD33C93
 	volatile unsigned char *sasr_3393, *scmd_3393;
 	unsigned char save_sasr;
 	unsigned char q, qq;

 	/*
 	 * These darn GVP boards are a problem - it can be tough to tell
 	 * whether or not they include a SCSI controller. This is the
 	 * ultimate Yet-Another-GVP-Detection-Hack in that it actually
 	 * probes for a WD33c93 chip: If we find one, it's extremely
 	 * likely that this card supports SCSI, regardless of Product_
 	 * Code, Board_Size, etc.
 	 */

 	/* Get pointers to the presumed register locations and save contents */

 	sasr_3393 = &regs->SASR;
 	scmd_3393 = &regs->SCMD;
 	save_sasr = *sasr_3393;

 	/* First test the AuxStatus Reg */

 	q = *sasr_3393;	/* read it */
 	if (q & 0x08)	/* bit 3 should always be clear */
 		return -ENODEV;
 	*sasr_3393 = WD_AUXILIARY_STATUS;	/* setup indirect address */
 	if (*sasr_3393 == WD_AUXILIARY_STATUS) {	/* shouldn't retain the write */
 		*sasr_3393 = save_sasr;	/* Oops - restore this byte */
 		return -ENODEV;
 	}
 	if (*sasr_3393 != q) {	/* should still read the same */
 		*sasr_3393 = save_sasr;	/* Oops - restore this byte */
 		return -ENODEV;
 	}
 	if (*scmd_3393 != q)	/* and so should the image at 0x1f */
 		return -ENODEV;

 	/*
 	 * Ok, we probably have a wd33c93, but let's check a few other places
 	 * for good measure. Make sure that this works for both 'A and 'B
 	 * chip versions.
 	 */

 	*sasr_3393 = WD_SCSI_STATUS;
 	q = *scmd_3393;
 	*sasr_3393 = WD_SCSI_STATUS;
 	*scmd_3393 = ~q;
 	*sasr_3393 = WD_SCSI_STATUS;
 	qq = *scmd_3393;
 	*sasr_3393 = WD_SCSI_STATUS;
 	*scmd_3393 = q;
 	if (qq != q)	/* should be read only */
 		return -ENODEV;
 	*sasr_3393 = 0x1e;	/* this register is unimplemented */
 	q = *scmd_3393;
 	*sasr_3393 = 0x1e;
 	*scmd_3393 = ~q;
 	*sasr_3393 = 0x1e;
 	qq = *scmd_3393;
 	*sasr_3393 = 0x1e;
 	*scmd_3393 = q;
 	if (qq != q || qq != 0xff)	/* should be read only, all 1's */
 		return -ENODEV;
 	*sasr_3393 = WD_TIMEOUT_PERIOD;
 	q = *scmd_3393;
 	*sasr_3393 = WD_TIMEOUT_PERIOD;
 	*scmd_3393 = ~q;
 	*sasr_3393 = WD_TIMEOUT_PERIOD;
 	qq = *scmd_3393;
 	*sasr_3393 = WD_TIMEOUT_PERIOD;
 	*scmd_3393 = q;
 	if (qq != (~q & 0xff))	/* should be read/write */
 		return -ENODEV;
 #endif /* CHECK_WD33C93 */

 	return 0;
 }

 int __init gvp11_detect(struct scsi_host_template *tpnt)
 {
 	static unsigned char called = 0;
 	struct Scsi_Host *instance;
 	unsigned long address;
 	unsigned int epc;
 	struct zorro_dev *z = NULL;
 	unsigned int default_dma_xfer_mask;
 	struct WD33C93_hostdata *hdata;
 	struct gvp11_scsiregs *regs;
 	wd33c93_regs wdregs;
 	int num_gvp11 = 0;

 	if (!MACH_IS_AMIGA || called)
 		return 0;
 	called = 1;

 	tpnt->proc_name = "GVP11";
 	tpnt->proc_info = &wd33c93_proc_info;

 	while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
 		/*
 		 * This should (hopefully) be the correct way to identify
 		 * all the different GVP SCSI controllers (except for the
 		 * SERIES I though).
 		 */

 		if (z->id == ZORRO_PROD_GVP_COMBO_030_R3_SCSI ||
 		    z->id == ZORRO_PROD_GVP_SERIES_II)
 			default_dma_xfer_mask = ~0x00ffffff;
 		else if (z->id == ZORRO_PROD_GVP_GFORCE_030_SCSI ||
 			 z->id == ZORRO_PROD_GVP_A530_SCSI ||
 			 z->id == ZORRO_PROD_GVP_COMBO_030_R4_SCSI)
 			default_dma_xfer_mask = ~0x01ffffff;
 		else if (z->id == ZORRO_PROD_GVP_A1291 ||
 			 z->id == ZORRO_PROD_GVP_GFORCE_040_SCSI_1)
 			default_dma_xfer_mask = ~0x07ffffff;
 		else
 			continue;

 		/*
 		 * Rumors state that some GVP ram boards use the same product
 		 * code as the SCSI controllers. Therefore if the board-size
 		 * is not 64KB we asume it is a ram board and bail out.
 		 */
 		if (z->resource.end - z->resource.start != 0xffff)
 			continue;

 		address = z->resource.start;
 		if (!request_mem_region(address, 256, "wd33c93"))
 			continue;

 		regs = (struct gvp11_scsiregs *)(ZTWO_VADDR(address));
 		if (check_wd33c93(regs))
 			goto release;

 		instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
 		if (instance == NULL)
 			goto release;
 		instance->base = ZTWO_VADDR(address);
 		instance->irq = IRQ_AMIGA_PORTS;
 		instance->unique_id = z->slotaddr;

 		hdata = shost_priv(instance);
 		if (gvp11_xfer_mask)
 			hdata->dma_xfer_mask = gvp11_xfer_mask;
 		else
 			hdata->dma_xfer_mask = default_dma_xfer_mask;

 		regs->secret2 = 1;
 		regs->secret1 = 0;
 		regs->secret3 = 15;
 		while (regs->CNTR & GVP11_DMAC_BUSY)
 			;
 		regs->CNTR = 0;

 		regs->BANK = 0;

 		epc = *(unsigned short *)(ZTWO_VADDR(address) + 0x8000);

 		/*
 		 * Check for 14MHz SCSI clock
 		 */
 		wdregs.SASR = &regs->SASR;
 		wdregs.SCMD = &regs->SCMD;
 		hdata->no_sync = 0xff;
 		hdata->fast = 0;
 		hdata->dma_mode = CTRL_DMA;
 		wd33c93_init(instance, wdregs, dma_setup, dma_stop,
 			     (epc & GVP_SCSICLKMASK) ? WD33C93_FS_8_10
 						     : WD33C93_FS_12_15);

 		if (request_irq(IRQ_AMIGA_PORTS, gvp11_intr, IRQF_SHARED,
 				"GVP11 SCSI", instance))
 			goto unregister;
 		regs->CNTR = GVP11_DMAC_INT_ENABLE;
 		num_gvp11++;
 		continue;

 unregister:
 		scsi_unregister(instance);
 release:
 		release_mem_region(address, 256);
 	}

 	return num_gvp11;
 }

 static int gvp11_bus_reset(struct scsi_cmnd *cmd)
 {
 	/* FIXME perform bus-specific reset */

 	/* FIXME 2: shouldn't we no-op this function (return
 	   FAILED), and fall back to host reset function,
 	   wd33c93_host_reset ? */

 	spin_lock_irq(cmd->device->host->host_lock);
 	wd33c93_host_reset(cmd);
 	spin_unlock_irq(cmd->device->host->host_lock);

 	return SUCCESS;
 }


 #define HOSTS_C

 #include "gvp11.h"

 static struct scsi_host_template driver_template = {
 	.proc_name		= "GVP11",
 	.name			= "GVP Series II SCSI",
 	.detect			= gvp11_detect,
 	.release		= gvp11_release,
 	.queuecommand		= wd33c93_queuecommand,
 	.eh_abort_handler	= wd33c93_abort,
 	.eh_bus_reset_handler	= gvp11_bus_reset,
 	.eh_host_reset_handler	= wd33c93_host_reset,
 	.can_queue		= CAN_QUEUE,
 	.this_id		= 7,
 	.sg_tablesize		= SG_ALL,
 	.cmd_per_lun		= CMD_PER_LUN,
 	.use_clustering		= DISABLE_CLUSTERING
 };


 #include "scsi_module.c"

 int gvp11_release(struct Scsi_Host *instance)
 {
 #ifdef MODULE
 	struct gvp11_scsiregs *regs = (struct gvp11_scsiregs *)(instance->base);

 	regs->CNTR = 0;
 	release_mem_region(ZTWO_PADDR(instance->base), 256);
 	free_irq(IRQ_AMIGA_PORTS, instance);
 #endif
 	return 1;
 }

 MODULE_LICENSE("GPL");
	#include <linux/types.h>
	#include <linux/mm.h>
	#include <linux/slab.h>
	#include <linux/blkdev.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>

	#include <asm/setup.h>
	#include <asm/page.h>
	#include <asm/pgtable.h>
	#include <asm/amigaints.h>
	#include <asm/amigahw.h>
	#include <linux/zorro.h>
	#include <asm/irq.h>
	#include <linux/spinlock.h>

	#include "scsi.h"
	#include <scsi/scsi_host.h>
	#include "wd33c93.h"
	#include "gvp11.h"

	#include <linux/stat.h>


	#define CHECK_WD33C93

	static irqreturn_t gvp11_intr(int irq, void *data)
	{
	struct Scsi_Host *instance = data;
	struct gvp11_scsiregs regs = (struct gvp11_scsiregs )(instance->base);
	unsigned int status = regs->CNTR;
	unsigned long flags;

	if (!(status & GVP11_DMAC_INT_PENDING))
	return IRQ_NONE;

	spin_lock_irqsave(instance->host_lock, flags);
	wd33c93_intr(instance);
	spin_unlock_irqrestore(instance->host_lock, flags);
	return IRQ_HANDLED;
	}

	static int gvp11_xfer_mask = 0;

	void gvp11_setup(char str, int ints)
	{
	gvp11_xfer_mask = ints[1];
	}

	static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
	{
	struct Scsi_Host *instance = cmd->device->host;
	struct WD33C93_hostdata *hdata = shost_priv(instance);
	struct gvp11_scsiregs regs = (struct gvp11_scsiregs )(instance->base);
	unsigned short cntr = GVP11_DMAC_INT_ENABLE;
	unsigned long addr = virt_to_bus(cmd->SCp.ptr);
	int bank_mask;
	static int scsi_alloc_out_of_range = 0;

	/* use bounce buffer if the physical address is bad */
	if (addr & hdata->dma_xfer_mask) {
	hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;

	if (!scsi_alloc_out_of_range) {
	hdata->dma_bounce_buffer =
	kmalloc(hdata->dma_bounce_len, GFP_KERNEL);
	hdata->dma_buffer_pool = BUF_SCSI_ALLOCED;
	}

	if (scsi_alloc_out_of_range \|\|
	!hdata->dma_bounce_buffer) {
	hdata->dma_bounce_buffer =
	amiga_chip_alloc(hdata->dma_bounce_len,
	"GVP II SCSI Bounce Buffer");

	if (!hdata->dma_bounce_buffer) {
	hdata->dma_bounce_len = 0;
	return 1;
	}

	hdata->dma_buffer_pool = BUF_CHIP_ALLOCED;
	}

	/* check if the address of the bounce buffer is OK */
	addr = virt_to_bus(hdata->dma_bounce_buffer);

	if (addr & hdata->dma_xfer_mask) {
	/* fall back to Chip RAM if address out of range */
	if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED) {
	kfree(hdata->dma_bounce_buffer);
	scsi_alloc_out_of_range = 1;
	} else {
	amiga_chip_free(hdata->dma_bounce_buffer);
	}

	hdata->dma_bounce_buffer =
	amiga_chip_alloc(hdata->dma_bounce_len,
	"GVP II SCSI Bounce Buffer");

	if (!hdata->dma_bounce_buffer) {
	hdata->dma_bounce_len = 0;
	return 1;
	}

	addr = virt_to_bus(hdata->dma_bounce_buffer);
	hdata->dma_buffer_pool = BUF_CHIP_ALLOCED;
	}

	if (!dir_in) {
	/* copy to bounce buffer for a write */
	memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr,
	cmd->SCp.this_residual);
	}
	}

	/* setup dma direction */
	if (!dir_in)
	cntr \|= GVP11_DMAC_DIR_WRITE;

	hdata->dma_dir = dir_in;
	regs->CNTR = cntr;

	/* setup DMA physical address */
	regs->ACR = addr;

	if (dir_in) {
	/* invalidate any cache */
	cache_clear(addr, cmd->SCp.this_residual);
	} else {
	/* push any dirty cache */
	cache_push(addr, cmd->SCp.this_residual);
	}

	bank_mask = (~hdata->dma_xfer_mask >> 18) & 0x01c0;
	if (bank_mask)
	regs->BANK = bank_mask & (addr >> 18);

	/* start DMA */
	regs->ST_DMA = 1;

	/* return success */
	return 0;
	}

	static void dma_stop(struct Scsi_Host instance, struct scsi_cmnd SCpnt,
	int status)
	{
	struct gvp11_scsiregs regs = (struct gvp11_scsiregs )(instance->base);
	struct WD33C93_hostdata *hdata = shost_priv(instance);

	/* stop DMA */
	regs->SP_DMA = 1;
	/* remove write bit from CONTROL bits */
	regs->CNTR = GVP11_DMAC_INT_ENABLE;

	/* copy from a bounce buffer, if necessary */
	if (status && hdata->dma_bounce_buffer) {
	if (hdata->dma_dir && SCpnt)
	memcpy(SCpnt->SCp.ptr, hdata->dma_bounce_buffer,
	SCpnt->SCp.this_residual);

	if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED)
	kfree(hdata->dma_bounce_buffer);
	else
	amiga_chip_free(hdata->dma_bounce_buffer);

	hdata->dma_bounce_buffer = NULL;
	hdata->dma_bounce_len = 0;
	}
	}

	static int __init check_wd33c93(struct gvp11_scsiregs *regs)
	{
	#ifdef CHECK_WD33C93
	volatile unsigned char sasr_3393, scmd_3393;
	unsigned char save_sasr;
	unsigned char q, qq;

	/*
	* These darn GVP boards are a problem - it can be tough to tell
	* whether or not they include a SCSI controller. This is the
	* ultimate Yet-Another-GVP-Detection-Hack in that it actually
	* probes for a WD33c93 chip: If we find one, it's extremely
	* likely that this card supports SCSI, regardless of Product_
	* Code, Board_Size, etc.
	*/

	/* Get pointers to the presumed register locations and save contents */

	sasr_3393 = &regs->SASR;
	scmd_3393 = &regs->SCMD;
	save_sasr = *sasr_3393;

	/* First test the AuxStatus Reg */

	q = sasr_3393; / read it */
	if (q & 0x08) /* bit 3 should always be clear */
	return -ENODEV;
	sasr_3393 = WD_AUXILIARY_STATUS; / setup indirect address */
	if (sasr_3393 == WD_AUXILIARY_STATUS) { / shouldn't retain the write */
	sasr_3393 = save_sasr; / Oops - restore this byte */
	return -ENODEV;
	}
	if (sasr_3393 != q) { / should still read the same */
	sasr_3393 = save_sasr; / Oops - restore this byte */
	return -ENODEV;
	}
	if (scmd_3393 != q) / and so should the image at 0x1f */
	return -ENODEV;

	/*
	* Ok, we probably have a wd33c93, but let's check a few other places
	* for good measure. Make sure that this works for both 'A and 'B
	* chip versions.
	*/

	*sasr_3393 = WD_SCSI_STATUS;
	q = *scmd_3393;
	*sasr_3393 = WD_SCSI_STATUS;
	*scmd_3393 = ~q;
	*sasr_3393 = WD_SCSI_STATUS;
	qq = *scmd_3393;
	*sasr_3393 = WD_SCSI_STATUS;
	*scmd_3393 = q;
	if (qq != q) /* should be read only */
	return -ENODEV;
	sasr_3393 = 0x1e; / this register is unimplemented */
	q = *scmd_3393;
	*sasr_3393 = 0x1e;
	*scmd_3393 = ~q;
	*sasr_3393 = 0x1e;
	qq = *scmd_3393;
	*sasr_3393 = 0x1e;
	*scmd_3393 = q;
	if (qq != q \|\| qq != 0xff) /* should be read only, all 1's */
	return -ENODEV;
	*sasr_3393 = WD_TIMEOUT_PERIOD;
	q = *scmd_3393;
	*sasr_3393 = WD_TIMEOUT_PERIOD;
	*scmd_3393 = ~q;
	*sasr_3393 = WD_TIMEOUT_PERIOD;
	qq = *scmd_3393;
	*sasr_3393 = WD_TIMEOUT_PERIOD;
	*scmd_3393 = q;
	if (qq != (~q & 0xff)) /* should be read/write */
	return -ENODEV;
	#endif /* CHECK_WD33C93 */

	return 0;
	}

	int __init gvp11_detect(struct scsi_host_template *tpnt)
	{
	static unsigned char called = 0;
	struct Scsi_Host *instance;
	unsigned long address;
	unsigned int epc;
	struct zorro_dev *z = NULL;
	unsigned int default_dma_xfer_mask;
	struct WD33C93_hostdata *hdata;
	struct gvp11_scsiregs *regs;
	wd33c93_regs wdregs;
	int num_gvp11 = 0;

	if (!MACH_IS_AMIGA \|\| called)
	return 0;
	called = 1;

	tpnt->proc_name = "GVP11";
	tpnt->proc_info = &wd33c93_proc_info;

	while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
	/*
	* This should (hopefully) be the correct way to identify
	* all the different GVP SCSI controllers (except for the
	* SERIES I though).
	*/

	if (z->id == ZORRO_PROD_GVP_COMBO_030_R3_SCSI \|\|
	z->id == ZORRO_PROD_GVP_SERIES_II)
	default_dma_xfer_mask = ~0x00ffffff;
	else if (z->id == ZORRO_PROD_GVP_GFORCE_030_SCSI \|\|
	z->id == ZORRO_PROD_GVP_A530_SCSI \|\|
	z->id == ZORRO_PROD_GVP_COMBO_030_R4_SCSI)
	default_dma_xfer_mask = ~0x01ffffff;
	else if (z->id == ZORRO_PROD_GVP_A1291 \|\|
	z->id == ZORRO_PROD_GVP_GFORCE_040_SCSI_1)
	default_dma_xfer_mask = ~0x07ffffff;
	else
	continue;

	/*
	* Rumors state that some GVP ram boards use the same product
	* code as the SCSI controllers. Therefore if the board-size
	* is not 64KB we asume it is a ram board and bail out.
	*/
	if (z->resource.end - z->resource.start != 0xffff)
	continue;

	address = z->resource.start;
	if (!request_mem_region(address, 256, "wd33c93"))
	continue;

	regs = (struct gvp11_scsiregs *)(ZTWO_VADDR(address));
	if (check_wd33c93(regs))
	goto release;

	instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
	if (instance == NULL)
	goto release;
	instance->base = ZTWO_VADDR(address);
	instance->irq = IRQ_AMIGA_PORTS;
	instance->unique_id = z->slotaddr;

	hdata = shost_priv(instance);
	if (gvp11_xfer_mask)
	hdata->dma_xfer_mask = gvp11_xfer_mask;
	else
	hdata->dma_xfer_mask = default_dma_xfer_mask;

	regs->secret2 = 1;
	regs->secret1 = 0;
	regs->secret3 = 15;
	while (regs->CNTR & GVP11_DMAC_BUSY)
	;
	regs->CNTR = 0;

	regs->BANK = 0;

	epc = (unsigned short )(ZTWO_VADDR(address) + 0x8000);

	/*
	* Check for 14MHz SCSI clock
	*/
	wdregs.SASR = &regs->SASR;
	wdregs.SCMD = &regs->SCMD;
	hdata->no_sync = 0xff;
	hdata->fast = 0;
	hdata->dma_mode = CTRL_DMA;
	wd33c93_init(instance, wdregs, dma_setup, dma_stop,
	(epc & GVP_SCSICLKMASK) ? WD33C93_FS_8_10
	: WD33C93_FS_12_15);

	if (request_irq(IRQ_AMIGA_PORTS, gvp11_intr, IRQF_SHARED,
	"GVP11 SCSI", instance))
	goto unregister;
	regs->CNTR = GVP11_DMAC_INT_ENABLE;
	num_gvp11++;
	continue;

	unregister:
	scsi_unregister(instance);
	release:
	release_mem_region(address, 256);
	}

	return num_gvp11;
	}

	static int gvp11_bus_reset(struct scsi_cmnd *cmd)
	{
	/* FIXME perform bus-specific reset */

	/* FIXME 2: shouldn't we no-op this function (return
	FAILED), and fall back to host reset function,
	wd33c93_host_reset ? */

	spin_lock_irq(cmd->device->host->host_lock);
	wd33c93_host_reset(cmd);
	spin_unlock_irq(cmd->device->host->host_lock);

	return SUCCESS;
	}


	#define HOSTS_C

	#include "gvp11.h"

	static struct scsi_host_template driver_template = {
	.proc_name = "GVP11",
	.name = "GVP Series II SCSI",
	.detect = gvp11_detect,
	.release = gvp11_release,
	.queuecommand = wd33c93_queuecommand,
	.eh_abort_handler = wd33c93_abort,
	.eh_bus_reset_handler = gvp11_bus_reset,
	.eh_host_reset_handler = wd33c93_host_reset,
	.can_queue = CAN_QUEUE,
	.this_id = 7,
	.sg_tablesize = SG_ALL,
	.cmd_per_lun = CMD_PER_LUN,
	.use_clustering = DISABLE_CLUSTERING
	};


	#include "scsi_module.c"

	int gvp11_release(struct Scsi_Host *instance)
	{
	#ifdef MODULE
	struct gvp11_scsiregs regs = (struct gvp11_scsiregs )(instance->base);

	regs->CNTR = 0;
	release_mem_region(ZTWO_PADDR(instance->base), 256);
	free_irq(IRQ_AMIGA_PORTS, instance);
	#endif
	return 1;
	}

	MODULE_LICENSE("GPL");