1 files changed, 152 insertions, 104 deletions

diff --git a/drivers/scsi/a3000.c b/drivers/scsi/a3000.c
index bc6eb69..d946802 100644
--- a/drivers/scsi/a3000.c
+++ b/drivers/scsi/a3000.c
@@ -1,53 +1,52 @@
 #include <linux/types.h>
 #include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
+#include <linux/platform_device.h>
 
-#include <asm/setup.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/amigaints.h>
 #include <asm/amigahw.h>
-#include <asm/irq.h>
 
 #include "scsi.h"
-#include <scsi/scsi_host.h>
 #include "wd33c93.h"
 #include "a3000.h"
 
-#include <linux/stat.h>
-
 
-#define DMA(ptr)	((a3000_scsiregs *)((ptr)->base))
-
-static struct Scsi_Host *a3000_host = NULL;
-
-static int a3000_release(struct Scsi_Host *instance);
+struct a3000_hostdata {
+	struct WD33C93_hostdata wh;
+	struct a3000_scsiregs *regs;
+};
 
-static irqreturn_t a3000_intr(int irq, void *dummy)
+static irqreturn_t a3000_intr(int irq, void *data)
 {
+	struct Scsi_Host *instance = data;
+	struct a3000_hostdata *hdata = shost_priv(instance);
+	unsigned int status = hdata->regs->ISTR;
 	unsigned long flags;
-	unsigned int status = DMA(a3000_host)->ISTR;
 
 	if (!(status & ISTR_INT_P))
 		return IRQ_NONE;
 	if (status & ISTR_INTS) {
-		spin_lock_irqsave(a3000_host->host_lock, flags);
-		wd33c93_intr(a3000_host);
-		spin_unlock_irqrestore(a3000_host->host_lock, flags);
+		spin_lock_irqsave(instance->host_lock, flags);
+		wd33c93_intr(instance);
+		spin_unlock_irqrestore(instance->host_lock, flags);
 		return IRQ_HANDLED;
 	}
-	printk("Non-serviced A3000 SCSI-interrupt? ISTR = %02x\n", status);
+	pr_warning("Non-serviced A3000 SCSI-interrupt? ISTR = %02x\n", status);
 	return IRQ_NONE;
 }
 
 static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 {
-	struct WD33C93_hostdata *hdata = shost_priv(a3000_host);
+	struct Scsi_Host *instance = cmd->device->host;
+	struct a3000_hostdata *hdata = shost_priv(instance);
+	struct WD33C93_hostdata *wh = &hdata->wh;
+	struct a3000_scsiregs *regs = hdata->regs;
 	unsigned short cntr = CNTR_PDMD | CNTR_INTEN;
 	unsigned long addr = virt_to_bus(cmd->SCp.ptr);
 
@@ -58,23 +57,23 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 	 * buffer
 	 */
 	if (addr & A3000_XFER_MASK) {
-		hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;
-		hdata->dma_bounce_buffer = kmalloc(hdata->dma_bounce_len,
-						   GFP_KERNEL);
+		wh->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;
+		wh->dma_bounce_buffer = kmalloc(wh->dma_bounce_len,
+						GFP_KERNEL);
 
 		/* can't allocate memory; use PIO */
-		if (!hdata->dma_bounce_buffer) {
-			hdata->dma_bounce_len = 0;
+		if (!wh->dma_bounce_buffer) {
+			wh->dma_bounce_len = 0;
 			return 1;
 		}
 
 		if (!dir_in) {
 			/* copy to bounce buffer for a write */
-			memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr,
+			memcpy(wh->dma_bounce_buffer, cmd->SCp.ptr,
 			       cmd->SCp.this_residual);
 		}
 
-		addr = virt_to_bus(hdata->dma_bounce_buffer);
+		addr = virt_to_bus(wh->dma_bounce_buffer);
 	}
 
 	/* setup dma direction */
@@ -82,12 +81,12 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 		cntr |= CNTR_DDIR;
 
 	/* remember direction */
-	hdata->dma_dir = dir_in;
+	wh->dma_dir = dir_in;
 
-	DMA(a3000_host)->CNTR = cntr;
+	regs->CNTR = cntr;
 
 	/* setup DMA *physical* address */
-	DMA(a3000_host)->ACR = addr;
+	regs->ACR = addr;
 
 	if (dir_in) {
 		/* invalidate any cache */
@@ -99,7 +98,7 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 
 	/* start DMA */
 	mb();			/* make sure setup is completed */
-	DMA(a3000_host)->ST_DMA = 1;
+	regs->ST_DMA = 1;
 	mb();			/* make sure DMA has started before next IO */
 
 	/* return success */
@@ -109,22 +108,24 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
 		     int status)
 {
-	struct WD33C93_hostdata *hdata = shost_priv(instance);
+	struct a3000_hostdata *hdata = shost_priv(instance);
+	struct WD33C93_hostdata *wh = &hdata->wh;
+	struct a3000_scsiregs *regs = hdata->regs;
 
 	/* disable SCSI interrupts */
 	unsigned short cntr = CNTR_PDMD;
 
-	if (!hdata->dma_dir)
+	if (!wh->dma_dir)
 		cntr |= CNTR_DDIR;
 
-	DMA(instance)->CNTR = cntr;
+	regs->CNTR = cntr;
 	mb();			/* make sure CNTR is updated before next IO */
 
 	/* flush if we were reading */
-	if (hdata->dma_dir) {
-		DMA(instance)->FLUSH = 1;
+	if (wh->dma_dir) {
+		regs->FLUSH = 1;
 		mb();		/* don't allow prefetch */
-		while (!(DMA(instance)->ISTR & ISTR_FE_FLG))
+		while (!(regs->ISTR & ISTR_FE_FLG))
 			barrier();
 		mb();		/* no IO until FLUSH is done */
 	}
@@ -133,96 +134,54 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
 	/* I think that this CINT is only necessary if you are
 	 * using the terminal count features.   HM 7 Mar 1994
 	 */
-	DMA(instance)->CINT = 1;
+	regs->CINT = 1;
 
 	/* stop DMA */
-	DMA(instance)->SP_DMA = 1;
+	regs->SP_DMA = 1;
 	mb();			/* make sure DMA is stopped before next IO */
 
 	/* restore the CONTROL bits (minus the direction flag) */
-	DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
+	regs->CNTR = CNTR_PDMD | CNTR_INTEN;
 	mb();			/* make sure CNTR is updated before next IO */
 
 	/* copy from a bounce buffer, if necessary */
-	if (status && hdata->dma_bounce_buffer) {
+	if (status && wh->dma_bounce_buffer) {
 		if (SCpnt) {
-			if (hdata->dma_dir && SCpnt)
-				memcpy(SCpnt->SCp.ptr,
-				       hdata->dma_bounce_buffer,
+			if (wh->dma_dir && SCpnt)
+				memcpy(SCpnt->SCp.ptr, wh->dma_bounce_buffer,
 				       SCpnt->SCp.this_residual);
-			kfree(hdata->dma_bounce_buffer);
-			hdata->dma_bounce_buffer = NULL;
-			hdata->dma_bounce_len = 0;
+			kfree(wh->dma_bounce_buffer);
+			wh->dma_bounce_buffer = NULL;
+			wh->dma_bounce_len = 0;
 		} else {
-			kfree(hdata->dma_bounce_buffer);
-			hdata->dma_bounce_buffer = NULL;
-			hdata->dma_bounce_len = 0;
+			kfree(wh->dma_bounce_buffer);
+			wh->dma_bounce_buffer = NULL;
+			wh->dma_bounce_len = 0;
 		}
 	}
 }
 
-static int __init a3000_detect(struct scsi_host_template *tpnt)
-{
-	wd33c93_regs regs;
-	struct WD33C93_hostdata *hdata;
-
-	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(A3000_SCSI))
-		return 0;
-	if (!request_mem_region(0xDD0000, 256, "wd33c93"))
-		return 0;
-
-	tpnt->proc_name = "A3000";
-	tpnt->proc_info = &wd33c93_proc_info;
-
-	a3000_host = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
-	if (a3000_host == NULL)
-		goto fail_register;
-
-	a3000_host->base = ZTWO_VADDR(0xDD0000);
-	a3000_host->irq = IRQ_AMIGA_PORTS;
-	DMA(a3000_host)->DAWR = DAWR_A3000;
-	regs.SASR = &(DMA(a3000_host)->SASR);
-	regs.SCMD = &(DMA(a3000_host)->SCMD);
-	hdata = shost_priv(a3000_host);
-	hdata->no_sync = 0xff;
-	hdata->fast = 0;
-	hdata->dma_mode = CTRL_DMA;
-	wd33c93_init(a3000_host, regs, dma_setup, dma_stop, WD33C93_FS_12_15);
-	if (request_irq(IRQ_AMIGA_PORTS, a3000_intr, IRQF_SHARED, "A3000 SCSI",
-			a3000_intr))
-		goto fail_irq;
-	DMA(a3000_host)->CNTR = CNTR_PDMD | CNTR_INTEN;
-
-	return 1;
-
-fail_irq:
-	scsi_unregister(a3000_host);
-fail_register:
-	release_mem_region(0xDD0000, 256);
-	return 0;
-}
-
 static int a3000_bus_reset(struct scsi_cmnd *cmd)
 {
+	struct Scsi_Host *instance = cmd->device->host;
+
 	/* FIXME perform bus-specific reset */
 
 	/* FIXME 2: kill this entire function, which should
 	   cause mid-layer to call wd33c93_host_reset anyway? */
 
-	spin_lock_irq(cmd->device->host->host_lock);
+	spin_lock_irq(instance->host_lock);
 	wd33c93_host_reset(cmd);
-	spin_unlock_irq(cmd->device->host->host_lock);
+	spin_unlock_irq(instance->host_lock);
 
 	return SUCCESS;
 }
 
-#define HOSTS_C
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "A3000",
+static struct scsi_host_template amiga_a3000_scsi_template = {
+	.module			= THIS_MODULE,
 	.name			= "Amiga 3000 built-in SCSI",
-	.detect			= a3000_detect,
-	.release		= a3000_release,
+	.proc_info		= wd33c93_proc_info,
+	.proc_name		= "A3000",
 	.queuecommand		= wd33c93_queuecommand,
 	.eh_abort_handler	= wd33c93_abort,
 	.eh_bus_reset_handler	= a3000_bus_reset,
@@ -234,15 +193,104 @@ static struct scsi_host_template driver_template = {
 	.use_clustering		= ENABLE_CLUSTERING
 };
 
+static int __init amiga_a3000_scsi_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct Scsi_Host *instance;
+	int error;
+	struct a3000_scsiregs *regs;
+	wd33c93_regs wdregs;
+	struct a3000_hostdata *hdata;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
+
+	if (!request_mem_region(res->start, resource_size(res), "wd33c93"))
+		return -EBUSY;
+
+	instance = scsi_host_alloc(&amiga_a3000_scsi_template,
+				   sizeof(struct a3000_hostdata));
+	if (!instance) {
+		error = -ENOMEM;
+		goto fail_alloc;
+	}
+
+	instance->irq = IRQ_AMIGA_PORTS;
 
-#include "scsi_module.c"
+	regs = (struct a3000_scsiregs *)ZTWO_VADDR(res->start);
+	regs->DAWR = DAWR_A3000;
+
+	wdregs.SASR = &regs->SASR;
+	wdregs.SCMD = &regs->SCMD;
+
+	hdata = shost_priv(instance);
+	hdata->wh.no_sync = 0xff;
+	hdata->wh.fast = 0;
+	hdata->wh.dma_mode = CTRL_DMA;
+	hdata->regs = regs;
+
+	wd33c93_init(instance, wdregs, dma_setup, dma_stop, WD33C93_FS_12_15);
+	error = request_irq(IRQ_AMIGA_PORTS, a3000_intr, IRQF_SHARED,
+			    "A3000 SCSI", instance);
+	if (error)
+		goto fail_irq;
+
+	regs->CNTR = CNTR_PDMD | CNTR_INTEN;
+
+	error = scsi_add_host(instance, NULL);
+	if (error)
+		goto fail_host;
+
+	platform_set_drvdata(pdev, instance);
+
+	scsi_scan_host(instance);
+	return 0;
+
+fail_host:
+	free_irq(IRQ_AMIGA_PORTS, instance);
+fail_irq:
+	scsi_host_put(instance);
+fail_alloc:
+	release_mem_region(res->start, resource_size(res));
+	return error;
+}
+
+static int __exit amiga_a3000_scsi_remove(struct platform_device *pdev)
+{
+	struct Scsi_Host *instance = platform_get_drvdata(pdev);
+	struct a3000_hostdata *hdata = shost_priv(instance);
+	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	hdata->regs->CNTR = 0;
+	scsi_remove_host(instance);
+	free_irq(IRQ_AMIGA_PORTS, instance);
+	scsi_host_put(instance);
+	release_mem_region(res->start, resource_size(res));
+	return 0;
+}
+
+static struct platform_driver amiga_a3000_scsi_driver = {
+	.remove = __exit_p(amiga_a3000_scsi_remove),
+	.driver   = {
+		.name	= "amiga-a3000-scsi",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init amiga_a3000_scsi_init(void)
+{
+	return platform_driver_probe(&amiga_a3000_scsi_driver,
+				     amiga_a3000_scsi_probe);
+}
+module_init(amiga_a3000_scsi_init);
 
-static int a3000_release(struct Scsi_Host *instance)
+static void __exit amiga_a3000_scsi_exit(void)
 {
-	DMA(instance)->CNTR = 0;
-	release_mem_region(0xDD0000, 256);
-	free_irq(IRQ_AMIGA_PORTS, a3000_intr);
-	return 1;
+	platform_driver_unregister(&amiga_a3000_scsi_driver);
 }
+module_exit(amiga_a3000_scsi_exit);
 
+MODULE_DESCRIPTION("Amiga 3000 built-in SCSI");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:amiga-a3000-scsi");