sparc: Kill SBUS DVMA layer.

This thing was completely pointless.

Just find the OF device in the parent of drivers that want to program
this device, and map the DMA regs inside such drivers too.

This also moves the dummy claim_dma_lock() and release_dma_lock()
implementation to floppy_32.h, which makes it handle this issue
just like floppy_64.h does.

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 1 insertions, 139 deletions

diff --git a/drivers/sbus/Makefile b/drivers/sbus/Makefile
index 7b1d24d..56f7331 100644
--- a/drivers/sbus/Makefile
+++ b/drivers/sbus/Makefile
@@ -3,7 +3,7 @@
 #
 
 ifneq ($(ARCH),m68k)
-obj-y    := sbus.o dvma.o
+obj-y    := sbus.o
 endif
 
 obj-$(CONFIG_SBUSCHAR) += char/
diff --git a/drivers/sbus/dvma.c b/drivers/sbus/dvma.c
deleted file mode 100644
index ab0d2de..0000000
--- a/drivers/sbus/dvma.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/* dvma.c:  Routines that are used to access DMA on the Sparc SBus.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-
-#include <asm/oplib.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/sbus.h>
-
-struct sbus_dma *dma_chain;
-
-static void __init init_one_dvma(struct sbus_dma *dma, int num_dma)
-{
-	printk("dma%d: ", num_dma);
-	
-	dma->next = NULL;
-	dma->running = 0;      /* No transfers going on as of yet */
-	dma->allocated = 0;    /* No one has allocated us yet */
-	switch(sbus_readl(dma->regs + DMA_CSR)&DMA_DEVICE_ID) {
-	case DMA_VERS0:
-		dma->revision = dvmarev0;
-		printk("Revision 0 ");
-		break;
-	case DMA_ESCV1:
-		dma->revision = dvmaesc1;
-		printk("ESC Revision 1 ");
-		break;
-	case DMA_VERS1:
-		dma->revision = dvmarev1;
-		printk("Revision 1 ");
-		break;
-	case DMA_VERS2:
-		dma->revision = dvmarev2;
-		printk("Revision 2 ");
-		break;
-	case DMA_VERHME:
-		dma->revision = dvmahme;
-		printk("HME DVMA gate array ");
-		break;
-	case DMA_VERSPLUS:
-		dma->revision = dvmarevplus;
-		printk("Revision 1 PLUS ");
-		break;
-	default:
-		printk("unknown dma version %08x",
-		       sbus_readl(dma->regs + DMA_CSR) & DMA_DEVICE_ID);
-		dma->allocated = 1;
-		break;
-	}
-	printk("\n");
-}
-
-/* Probe this SBus DMA module(s) */
-void __init dvma_init(struct sbus_bus *sbus)
-{
-	struct sbus_dev *this_dev;
-	struct sbus_dma *dma;
-	struct sbus_dma *dchain;
-	static int num_dma = 0;
-
-	for_each_sbusdev(this_dev, sbus) {
-		char *name = this_dev->prom_name;
-		int hme = 0;
-
-		if(!strcmp(name, "SUNW,fas"))
-			hme = 1;
-		else if(strcmp(name, "dma") &&
-			strcmp(name, "ledma") &&
-			strcmp(name, "espdma"))
-			continue;
-
-		/* Found one... */
-		dma = kmalloc(sizeof(struct sbus_dma), GFP_ATOMIC);
-
-		dma->sdev = this_dev;
-
-		/* Put at end of dma chain */
-		dchain = dma_chain;
-		if(dchain) {
-			while(dchain->next)
-				dchain = dchain->next;
-			dchain->next = dma;
-		} else {
-			/* We're the first in line */
-			dma_chain = dma;
-		}
-
-		dma->regs = sbus_ioremap(&dma->sdev->resource[0], 0,
-					 dma->sdev->resource[0].end - dma->sdev->resource[0].start + 1,
-					 "dma");
-
-		dma->node = dma->sdev->prom_node;
-		
-		init_one_dvma(dma, num_dma++);
-	}
-}
-
-#ifdef CONFIG_SUN4
-
-#include <asm/sun4paddr.h>
-
-void __init sun4_dvma_init(void)
-{
-	struct sbus_dma *dma;
-	struct resource r;
-
-	if(sun4_dma_physaddr) {
-		dma = kmalloc(sizeof(struct sbus_dma), GFP_ATOMIC);
-
-		/* No SBUS */
-		dma->sdev = NULL;
-
-		/* Only one DMA device */
-		dma_chain = dma;
-
-		memset(&r, 0, sizeof(r));
-		r.start = sun4_dma_physaddr;
-		dma->regs = sbus_ioremap(&r, 0, PAGE_SIZE, "dma");
-
-		/* No prom node */
-		dma->node = 0x0;
-
-		init_one_dvma(dma, 0);
-	} else {
-	  	dma_chain = NULL;
-	}
-}
-
-#endif
diff --git a/drivers/sbus/sbus.c b/drivers/sbus/sbus.c
index 53e5e7b..6949162 100644
--- a/drivers/sbus/sbus.c
+++ b/drivers/sbus/sbus.c
@@ -285,8 +285,6 @@ static void __init build_one_sbus(struct device_node *dp, int num_sbus)
 	}
 
 	sbus_fixup_all_regs(sbus->devices);
-
-	dvma_init(sbus);
 }
 
 static int __init sbus_init(void)