Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/sbus/dvma.c b/drivers/sbus/dvma.c
new file mode 100644
index 0000000..378a1d6
--- /dev/null
+++ b/drivers/sbus/dvma.c
@@ -0,0 +1,137 @@
+/* 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/config.h>
+#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;
+
+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